Choosing a Diet for Your Cat – Wet or Dry?

Posted on June 4, 2023 by felinepurrspective_u3q4o6

Daily Food Portion Cat — Gus looks at his daily food allotment. Treats count!

What should you feed your cat – wet food? dry food? a mixture?

A diet for your cat – wet or dry must be balanced and nutritious. Dry cat food is convenient and less costly than wet foods. It can be left out without as much concern for spoilage. You don’t have to be home to feed your cat. But will your cat drink enough water? How do wet and dry foods compare with regard to providing your cat enough protein and not too many calories?

Choosing a diet for your cat – wet or dry?

moisture

A wild cat gets most of his moisture from the prey he eats. He typically consumes the entire animal, including the fur and gut contents and eats the equivalent of 6-10 mice a day.

Wet cat foods typically contain 80% moisture by weight. Dry foods are closer to 10% by weight. Cats eating a dry diet must supplement their diet by drinking water.

Let’s look at the moisture some typical foods would offer a 10 lb cat eating 200 kcal daily.

	Food 1 (wet)	Food 2 (wet)	Food 3 (dry)	Food 4 (dry)
Moisture (%)	78	80	12	12
Metabolizable Energy (kcal/kg)	942	700	4342	3770
Cat’s weight (lbs)	10	10	10	10
Amount of food daily (g)	212	285	46	53
Moisture from food ( ml)	165	228	5.5	6.4
Moisture in food (ounces)	5.6	7.7	0.19	0.22

This table shows how much moisture (water) our cat will get by eating 200 kcal of each of these foods. The wet foods provide about 6-8 oz daily where the dry foods provide a fraction of that.

but my cat drinks plenty of water…

Cats should drink about 4 ounces of water per five pounds of lean body weight daily. Our 10 pound cat needs to drink about one cup of water per day. If he does not drink enough, he may become constipated or risk having urinary crystals. If he eats the wet diet, he will get most of this water in his food.

But, you say, my cat drinks plenty of water. She is at the water bowl frequently. Cats don’t scoop water up with their tongues, instead when the curled-back tip of the tongue touches the water surface, a thin column of liquid is drawn up into the mouth. That column of water is about 3/100 of a teaspoon. A lot of lapping is needed to reach 1 cup of water daily.

If your cat’s stools tend to be hard or her skin around her shoulders doesn’t snap back quickly when you tent it, you may want to encourage her to drink more or add some canned food to her diet.

choosing a diet for your cat – wet or dry: protein

A diet for your cat -wet or dry should provide your cat with enough protein to maintain Lean Body Mass (LBM).

If you compare foods on a dry matter basis (removing all the water), protein content can look similar, at 40-50%. Wet foods, however, often have a higher protein/energy ratio – they deliver more protein per 100 kcal than dry cat foods. The carbohydrate needed to process the dry foods may be the culprit here – the amount of protein is diluted by the additional calories provided by the carbohydrate.

In this chart, you can see that our 10 lb cat will more than satisfy his LBM protein requirements with 200 kcal of Food 2; he will be close with Food 1. The two dry foods require 230-240 kcal to provide enough protein to satisfy the LBM . These additional calories could result in weight gain. (These calculations are done on an “as-fed” basis using the Atwater equation).

	Food 1 (wet)	Food 2 (wet)	Food 3 (dry)	Food 4 (dry)
Metabolizable Energy(kcal/kg)	942	700	4342	3770
Protein (g/100 kcal)	10.6	15.7	9.7	10
Cat’s weight (lbs)	10	10	10	10
Protein for LBM	23	23	23	23
Calories Needed to Satisfy LBM (kcal)	216	146	237	230

a diet for your cat – wet or dry: calories

Dry cat foods tend to be more “calorie dense” than the canned foods. The dry foods in the table have over 4 x the amount of kilocalories per kg of food of the wet foods. Dry food is concentrated – a small amount has a lot of calories. A bored cat can easily eat too much and put on weight. The water in the wet foods tends to fill our cats up and give them a feeling of satiety.

choosing a diet for your cat – wet or dry?

A lot boils down to your cat’s preferences. Both dry and wet diets provide balanced nutrition but wet foods provide your cat with

water
higher protein/energy
lower calorie meal plan

a compromise: wet and dry

If your cat will eat wet and dry, consider a combination feeding program. Here is one where your cat gets two wet meals that are supplemented with tasty dry food in between in food puzzles, as training treats, or in a treat toss game. The two wet meals can go a long way to providing your cat with moisture and protein to maintain LBM.

Breakfast: wet meal
Day Time: food puzzles or feeders with dry food
Dinner: wet meal
Bedtime Snack: Treat Time – treat toss or training ( sitting , targeting )

My cat refuses wet foods

Some cat prefer dry food. Why?

Food preferences are established when cats are kittens. They eat what their mother eats.
If the kittens do not eat wet foods at weaning and the first few months afterwards, they will often refuse to eat them later.
This can be a problem when cats become older and wet food can help manage medical conditions, such as kidney disease. (Reference 1)

The pet food industry works hard to make those kibbles appealing to cats. Not only is there the texture or “mouth feel”, the kibbles are often sprayed with protein hydrolysates or “digest” to increase palatablity. Soy sauce is an example of protein hydrolysates used to enhance the taste of foods for humans. (Reference 2)

for dry food addicts only…

Make sure to hydrate your cat – try water from tuna, water used to poach chicken or fish (offer alone, add to the water bowl, or try frozen in an ice cube tray and added to the water bowl) (Reference 3)
Try some of the high protein, low calorie (low fat, low carb) dry diets.
Try moistening your cat’s kibble with low-sodium chicken broth.
Try mixing some canned food with your cat’s dry. Start with a small amount and increase if she accepts it.

references

Zoran, Debra. “Feline Nutrition: Understanding How to Feed Cats for Obesity Prevention and Weight Management”, dvm360.com, 11/10/13
Ahmet Yavuz Pekela, Serkan BarışMülazımoğlub and Nüket Acar(2020) “Taste preferences and diet palatability in cats,” Journal of Applied Animal Research, 48:1, 281-292, DOI:10.1080/09712119.2020.1786391
Caney, S., Gunn-Moore, D. Caring for a cat with lower urinary tract disease, Cat Professional 2011, www.catprofessional.com, p. 45

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How Many Calories Should Your Cat Eat in Day?

Posted on May 28, 2023 by felinepurrspective_u3q4o6

If your cat consumes more calories than she burns, she will gain weight. So, how many calories should your cat eat in day to maintain a healthy body weight?

Like people, cats are individuals; some have higher metabolisms than others. Things that affect how heavy or thin a cat is include (Reference 1):

Genetics
Sex
Spayed? neutered?
Hormonal changes eg. hyperthyroidism, diabetes

The feeding guidelines on cat food cans or packages are a start but they can be misleading. Many of these guidelines are based on feeding intact cats and often recommend 25-35% more food than most housecats (spayed or neutered) need to eat. Immediately after spaying or neutering, the cat undergoes hormonal changes (changes in estrogen, progestin, insulin-like growth factor) that affect metabolism. The results are an increased appetite, decreased energy requirements, changes in glucose tolerance and fat metabolism. (Reference 1)

How Many Calories Should Your Cat Eat in a day?

A Rule of Thumb

Most average-sized (9 to 11 pounds) spayed and neutered cats need to eat about 200 kcal daily to maintain lean body condition.
Neutered males may need to eat less, about 180 kcal/day. (Reference 1)

Monitor your cat’s body condition

Be attuned to factors that can lead to weight gain or loss, such as disease (hyperthyroidism), feeding behavior (a cat eats another cat’s food) or lifestyle change (access to a catio).
Monitor your cat’s body weight, his body condition score and his muscle condition score regularly.

How Many Calories Should Your Cat Eat?

Weigh Your Cat

You can weigh your cat at the veterinary clinic but, even better, purchase a baby scale to weigh your cat at home. This is more convenient, especially if your cat is on a weight-loss program and needs to be weighed frequently. You can make this fun by training your cat to get on the scale for a yummy reward (something low calorie, of course!)

“How Do I Look” – the Body Condition Score (BCS)

Look at your cat’s profile from above and from the side. Ideal body condition is defined as a visible waist (when viewed from above) and tummy tuck (side profile). You should be able to easily feel his ribs under his skin and fur. Compare what you see with the pictures on the Body Condition Chart. Give your cat a score.

Once you know your cat’s weight and Body Condition Score, you can get a calorie estimate from a convenient calculator at https://petnutritionalliance.org/resources/calorie-calculator?type=cats

How Many Calories Should Your Cat Eat?

Here are some photos of Gus, who currently weighs 12.50 pounds. You can feel his ribs but there is some fat over them. His waist and shoulders are distinguishable but he does not have much of an abdominal tuck. We will give him a BCS of 6. The Pet Nutrition Alliance site recommends an ideal weight of 11.4 lbs and 216 kcal daily for weight loss.

Lean Body Mass and Healthy Weight

In a previous post, we talked about Lean Body Mass (LBM) and the benefits of a higher LBM for cats:

A higher percent of muscle will boost your cat’s metabolism
Make it easier for her to maintain a health body weight
Can help your cat live longer.

Choosing a diet to promote LBM – A Math Problem

Studies indicate that to maintain LBM, a cat should consume around 5.2 g protein per kg or 2.3 g protein per pound. (Reference 2). Using your cat’s weight, you can multiply by 2.3 (weight in pounds) or 5.2 (weight in kg) to estimate the protein he or she needs. Gus weighs 12.5 lbs and needs 28.8 grams of protein daily.

Here are two canned foods and two dry foods, with guaranteed analysis and protein content. As you can see in the chart, there is only one food (wet) out of the 4 foods that will provide Gus with the protein he needs while he loses weight eating 216 kcal daily. Food 2 can give him the 28.8 g protein in 183 kcal. (See “How Much Protein Should You Feed Your Cat?” for estimating the amount of protein in a food.)

	Food 1 (wet)	Food 2 (wet)	Food 3 (dry)	Food 4 (dry)
Crude Protein (%)	10	11	42	42
Crude Fat (%)	5	2	19	9
Crude Fiber (%)	1.5	1.5	3.2	5.0
Moisture (%)	78	80	12	12
Ash (%)	3.2	3.5	0	0
Carbohydrate (%)	2.3	2	23.8	32
MER (kcal/kg)	942	700	4342	3770
Protein (g/ 100 kcal)	10.6	15.7	9.7	11.1
Cat’s weight (lbs)	12.5	12.5	12.5	12.5
Protein for LBM	28.8	28.8	28.8	28.8
Calories of Food Needed (kcal)	270.8	183.0	297.2	258.1

The muscle condition score

There is one more thing we need to monitor – the cat’s Muscle Condition Score (MCS). Loss of muscle over the spine, shoulder blades, skull, and hips (that “bony” feeling) is an indicator of LBM loss. Although you cannot prevent loss of muscle due to aging, you may be able to slow it down by feeding a higher protein diet. Here is a chart to help score the muscle condition. Gus, at age 7, still has normal muscle mass, which we will try to maintain by ensuring he gets enough protein in his diet.

Feeding your cat is more than just how many calories should your cat eat. We must balance calories and nutrients and monitor weight, BCS and MCS regularly to make sure the feeding plan is working. AAFCO labeled foods ensure that your cat receives the basic nutritional requirements. Optimal nutrition for the individual cat, especially one with medical conditions, may require a more detailed plan and possibly the services of a board-certified veterinary nutritionist.

references:

Zoran, Debra. “Feline Obesity: Clinical Recognition and Management” Compendium, June 2009 (Vol 31, No 6).
Laflamme DP, Hannah SS. Discrepancy between use of lean body mass or nitrogen balance to determine protein requirements for adult cats. Journal of Feline Medicine and Surgery. 2013;15(8):691-697. doi:10.1177/1098612X12474448

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How Much Protein Should You Feed Your Cat?

Posted on May 21, 2023June 3, 2023 by felinepurrspective_u3q4o6

Your cat evolved to eat a diet high in protein. How much protein should you feed your cat? Research suggests feeding enough protein to maintain Lean Body Mass.

Measuring Protein in Food

Nitrogen Balance

The protein content of a food is determined by measuring the nitrogen in it. The difference between the nitrogen we that take in (by eating food) and the nitrogen we put out (in urine) reflects the gain or loss of total body protein and is called the nitrogen balance. Traditionally, the amount of protein that maintains a zero nitrogen balance was considered the minimum protein required to be healthy. [Reference 1]

Nitrogen is one of the most common chemical elements in the universe. The atmosphere surrounding the Earth is about 78% nitrogen. Proteins, those molecules in our bodies that are used to build and repair tissues and act as hormones or enzymes, contain nitrogen.

Lean Body Mass

Recent research in both human and animal nutrition suggests that it is not enough just to maintain a zero nitrogen balance – animals and humans should consume enough protein to maintain their Lean Body Mass (LBM). Lean body mass is the difference between total body weight and the weight of body fat. LBM is made up of the muscle and internal organs.

Muscle and internal organs have a higher metabolic rate than fat. So, a higher percentage of muscle will boost your metabolism, help you maintain a healthy weight, and may help you to live longer. [Reference 2]

How much protein should you feed your cat?

A study followed 24 adult neutered male cats over several months to compare the amount of protein necessary to achieve nitrogen balance with the protein required to maintain LBM (measured by dual energy x-ray absorptiometry or DEXA).

The cats were divided into 3 groups and fed diets with different amounts of protein: one group received a “low” protein diet, the second a “moderate” protein diet and the third group was given a “high” protein diet. [Reference 1]

Results: more dietary protein was required to maintain LBM than to satisfy the nitrogen balance.

Nitrogen balance was maintained with 1.5 g protein/kg (0.7 g/pound) of body weight.
LBM was maintained with 5.2 g protein/kg (2.3 g/pound) of body weight .

how much food will give your cat enough protein?

There is no easy answer to this. Not only are there differences in the metabolisms of individual cats and different food formulations, not all the energy in that can or bag of cat food can be metabolized.

To measure how much metabolizable energy (ME) a particular cat food provides your cat, you would need to do a “feeding study”. Such a study measures what goes into the cat and what comes out. The difference is what is metabolized.

Feeding studies are expensive so the pet food industry has devised formulas to estimate the amount of metabolizable energy (ME) in a food using the guaranteed analysis on the pet food label. (The percentage of carbohydrates can be calculated by adding up the protein, fat, crude fiber, moisture and ash listed in the guaranteed analysis and subtracting this total from 100%.)

One of the simpler formulas used is the Atwater equation shown below. [Reference 3]

ME (kcal/kg) = [4x Crude Protein(%) + 4 x Carbohydrate (%) + 9 x Crude Fat (%)] x 10

Nutrients for feeding guidelines are reported per 100 kcal of ME. To find out how much protein your cat food provides per 100 kcal of metabolizable food, we return to the crude protein estimate and reference it to the ME.

Grams protein/ 100 kcal ME = [Crude Protein(%) x 1000] / ME (kcal/kg)

How much protein should you feed your cat? Let’s look at some protein estimates using values from a few typical food labels. These calculations are done on an “as fed” basis.

	Crude Protein (%)	Carbohydrate (%)	Crude Fat (%)	ME (kcal/kg)	Protein (grams/100 kcal)
Canned A	12	2.1	2.2	762	15.7
Canned B	10	3.8	5	942	10.6
Dry A	43	24.5	19	4410	9.8
Dry B	33.5	30.6	21.1	4463	7.5

Let’s take the example of a 10 lb or 4.5 kg cat in average condition – not fat, not thin. Per the research referenced above, this cat would need about 23 grams of protein daily.

The average 10 lb cat burns about 200 kcal daily. Looking at the foods above, 200 kcal of Canned A would give our 10 lb cat more than 23 g protein; Canned B gives him 22 g, a little short of the daily goal. Neither of the dry foods provide enough protein in 200 kcal to meet the lean body mass requirement: Dry A provides 19.6 g per 200 kcal and Dry B, 15 g per 200 kcal.

How much protein should you feed your cat?

- The 5.2 g protein/kg body weight is the result of two studies – more work is needed to establish accurate protein requirements.
- Protein requirements may vary with age, gender, and breed.
- Medical conditions such as chronic kidney disease can also affect your cat’s protein requirements.

Your veterinarian is a good resource for helping you figure out how much protein to feed your cat. He or she can assess your cat’s body and muscle condition and health to determine if your cat is receiving enough protein and calories.

In our next post, we will consider how many calories your cat should eat every day and how Body Condition Score and Muscle Condition Score can give you an idea of your cat’s body composition, muscle-to-fat ratio and nutritional status.

references

Laflamme DP, Hannah SS. Discrepancy between use of lean body mass or nitrogen balance to determine protein requirements for adult cats. Journal of Feline Medicine and Surgery. 2013;15(8):691-697. doi:10.1177/1098612X12474448
Zhang X, Wang C, Dou Q, Zhang W, Yang Y, Xie X. Sarcopenia as a predictor of all-cause mortality among older nursing home residents: a systematic review and meta-analysis. BMJ Open. 2018 Nov 12;8(11):e021252. doi: 10.1136/bmjopen-2017-021252.
Asaro NJ, Guevara MA, Berendt K, Zijlstra R, Shoveller AK. Digestibility Is Similar between Commercial Diets That Provide Ingredients with Different Perceived Glycemic Responses and the Inaccuracy of Using the Modified Atwater Calculation to Calculate Metabolizable Energy. Vet Sci. 2017 Nov 8;4(4):54. doi: 10.3390/vetsci4040054.

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Feeding Your Cat A Complete and Balanced Diet

Posted on May 7, 2023May 7, 2023 by felinepurrspective_u3q4o6

In the last post, we spoke about your cat and some of her unique nutritional needs. She is an obligate carnivore, designed to eat small animals but she does have some flexibility and can use carbohydrates for energy. Lean times are hard for cats and their livers are slow to process stored fat. Unlike other mammals, her body does not synthesize the amino acids, taurine and arginine, and these must be provided in her diet.

Cats dine on small rodents, rabbits, birds, reptiles and insects. They will consume the entire animal, fur, tendons, blood, gut contents… Even if your cat is an active outdoor hunter, you are going to offer her some food and will probably turn to some of the many commercial cat foods available.

feeding your cat A complete and balanced diet

A feral cat gets about 52% of his energy from protein and 46% from the fat of the prey he eats. Your cat will need a diet with protein and fat. Like other animals, the cells in his body require glucose (a carbohydrate) to function. Cats typically use proteins for energy and produce glucose via gluconeogenesis, regardless of fasting or starvation. But cats are flexible and if they consume a minimum amount of protein, they can use dietary carbohydrate as a source of glucose, and spare the proteins for other tasks, such as building and repairing tissues and acting as hormones (reference 3). When feeding your cat, you will want to offer him some fat and carbohydrates, in addition to protein.

How much fat? carbohydrates? protein?

Like people, cats are individuals and their dietary intake varies. Most of the time, we feed our cats and note if they gain or lose weight, and adjust their intake accordingly.

What is a complete and balanced diet for a cat? A complete and balanced diet will provide the cat all the nutrition she needs, including essential amino acids, protein, fat and minerals. Most pet foods on the market will have a label stating that the food is formulated according to the guidelines established by the American Association of Feed Control Officials (AAFCO) or in Europe, the European Pet Food Industry Federation (FEDIAF). We look briefly at the AAFCO guidelines.

About AAFCO

The original guidelines were formulated in 1990 and have been revised several times; the latest iteration was in 2007-2008. The guidelines establish nutrient concentrations for ingredients typically sourced for pet food. Nutrients include protein, fat, essential amino acids, vitamins and minerals.

AAFCO profiles guarantee that the product contains the minimum (or maximum) concentrations for the nutrients in the profile. For example, protein in excess of the minimum concentration is acceptable whereas a maximum concentration for Vitamin D avoids concerns with toxicity. There are two profiles for cats: one for “growth and reproduction” and a second for “adult maintenance”. The chart below shows the recommendations for fat and protein in cat foods. (Reference 1)

AAFCO Nutrient Profile	Protein	Fat
Growth & Reproduction	30%	9%
Adult Maintenance	26%	9%

The Cat Food Label:

The label that goes on a can or bag of cat food has eight items. We will focus on item 4: the Guaranteed Analysis. This is a list of the percentage of each of the nutrients in the food. The minimum percent of crude protein and crude fat, and the maximum percent of crude fiber and moisture must be included. (See Feeding Your Cat: Choosing a Food for more about AAFCO labels).

Fats

There is not an established requirement for fat. The minimum concentration of 9% in the AAFCO guidelines is based on recognition of the role that fat plays in the diet: a source of essential fatty acids, a carrier of fat-soluble vitamins, enhances palatability, and supplies adequate calories. (Reference 1)

Fats are used for energy (providing 9 kcals/g) and if there is more fat than the cat needs in his diet, he will store it – like those “chonky” cats on the internet. Fats also increases the palatability of the diet and may encourage over-eating. There are low-calorie diets containing less than 9% fat that have an AAFCO label.

Carbohydrates

Carbohydrates are not listed in the guaranteed analysis. An estimated percentage of carbohydrates can be calculated by adding up the protein, fat, crude fiber, moisture and ash listed in the guaranteed analysis and subtracting this total from 100%. (Reference 2).

In the wild, cats eat a diet that is primarily protein and fat. This leads many folks to think that cats do not need or use carbohydrates. But like other animals, their cells require glucose to function. They can either get this by breaking down protein or from dietary carbohydrate.

Carbohydrates are necessary in the processing of commercial cat food, particularly kibble. Most commercial dry foods contain 33-45% as carbohydrates (dry matter)(Reference 4); canned foods tend to have less than 10%.

Some carbohydrates in the cat’s diet will not present a problem providing he gets enough protein. Too much carbohydrate (even highly digestible carbohydrates) can cause diarrhea, flatulence and bloating (Reference 3). Feeding your cat too much carbohydrate can also “dilute” the protein in the food – the cat may reach satiety before getting his necessary protein. Diets greater than 60% dry matter risk nutrient unbalance. Even smaller amounts (50% dry matter) can be a problem – for example, kittens need a lot of protein and too many carbohydrates will reduce the protein available to them. (Reference 4)

And Now for Protein…

Your cat is an obligate carnivore and protein is an essential part of a cat’s complete and balanced diet. Cats have distinct dietary requirements for protein and these will be the subject of the next post in “Feeding Your Cat”.

References

AAFCO Methods for Substantiating Nutritional Adequacy of Dog and Cat Foods. https://www.aafco.org/
Heinz, C. “Carb Confusion: Part 2. Measuring and Comparing Carbohydrates in Pet Foods” (9/27/21) https://vetnutrition.tufts.edu/2021/09/carb-confusion-part-2-measuring-carbs/.
Verbrugghe A, Hesta M. Cats and Carbohydrates: The Carnivore Fantasy? Vet Sci. 2017 Nov 15;4(4):55. doi: 10.3390/vetsci4040055. PMID: 29140289; PMCID: PMC5753635.
Kirk, Claudia. “Feline Nutrition: What Is Excess Carbohydrate?”. Purina Companion Animal Nutrition Summit: Tackling Myths About Pet Nutrition, Atlanta, GA March 21-23, 2013.

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Three Things to Know When Feeding Your Cat

Posted on April 30, 2023May 5, 2023 by felinepurrspective_u3q4o6

Cats are what we call “obligate carnivores” – they have evolved to eat a diet primarily of animal meat. They have small stomachs, short intestinal tracts, and are designed to eat frequently. A feral cat eats eats the equivalent of 6-8 mice as he hunts from dusk to dawn. In addition to small rodents, reptiles, birds, insects, and rabbits are also on the menu. He consumes the entire prey, including the blood, hair, skin, bones, tendons, and gut contents. These prey are high in protein, have some fat, but little carbohydrate. A feral cat gets about 52% of his energy from protein and 46% from the fat of the prey he eats.

This post is the first in a series that aims to highlight things you need to know when feeding your cat.

Three things to know when feeding your cat

Essential Amino Acids

Amino acids are the building blocks of proteins, those molecules that are used to build and repair tissues and act as hormones or enzymes, among other roles.
Amino acids not synthesized in the body are called essential amino acids and must be consumed in the diet. The 9 essential amino acids required by most mammals are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. (Reference 1)

Cats must consume two additional amino acids: arginine and taurine. (Reference 1)

Taurine (for vision, cardiac muscle function and the function of nervous, reproductive and immune systems). Sources are meat, poultry (in particular the heart) and fish.
Arginine (for making proteins, stimulating the release of growth hormone and insulin, helps eliminate ammonia from the body). Sources are animal tissue.

#1. These 11 essential amino acids will be supplemented in cat foods that are formulated according to the AAFCO feeding guidelines.

Feeding Your Cat – Can Cats Digest Carbohydrates?

Cats in the wild eat a diet high in protein and fat, with little carbohydrate. Carbohydrates (grains, corn, potatoes, legumes) are needed to make dry commercial pet foods. Carbohydrates are combined with other nutrients to make a “dough” that is formed into kibble and cooked. These foods certainly are convenient and many cats like them, but can they digest the carbohydrates in these foods?

CATS AND CARBOHYDRATES

Dietary carbohydrate provides glucose to the cells for most species including humans. If there is not enough dietary carbohydrate, proteins can be used as a glucose source via the process of gluconeogenesis. Gluconeogenesis occurs in the liver and is activated for most species during fasting and starvation.

In contrast, cats are obligate carnivores and consume a diet high in protein in the wild. They typically use proteins for energy and produce glucose via the gluconeogenesis pathway, regardless of fasting or starvation. Glucose can be stored in the tissues in the form of glycogen (Reference 2).

#2. Cats have low levels of the enzymes needed to digest carbohydrates in their saliva and gastrointestinal tract. However, recent studies have found that adult cats can digest carbohydrates added to a meat-based diet, providing the starches and grains are processed appropriately, for example, by cooking.

These studies also show that cats can increase or decrease protein metabolism depending on how much protein is available. For this to happen, the cat has to eat a minimum amount of protein. After that threshold (about 15% metabolizable energy in cats) is reached, cats can use carbohydrates to produce glucose, sparing the proteins for other essential processes in the body, such as building and repairing tissues and acting as hormones. (Reference 3)

feeding your cat – make sure your cat eats every day

The Process of Starvation

Cats are designed to eat frequently. When faced with dwindling food supplies, the cat will initially use glycogen for energy. Once glycogen stores are depleted, amino acids are mobilized from lean muscle. Within a few days, the cat’s body will start to use fat stores for energy.

The fat moves to the liver to compensate for the fat that would normally be eaten in food. The cat’s liver can only process so much fat at a time and, consequently, fat can accumulate in the cat’s liver (“fatty liver syndrome”) and prevent the liver from functioning properly.

Hepatic Lipidosis – “Fatty Liver Syndome”

The liver of a cat with hepatic lipidosis may triple in size due to accumulation of fat.
Hepatic lipidosis is associated with anorexia (not eating).
The onset can be rapid, maybe 2-7 days.
Hepatic lipidosis can be FATAL!

Treatment of the Yellow Cat

The typical patient with hepatic lipdosis is a cat around 7 years old who is overweight. Clinical signs include lack of appetite, vomiting, diarrhea and lethargy. As the disorder progresses, the cat’s ears, mouth and skin may take on a yellowish hue.

Cats with hepatic lipidosis require nutritional support and intravenous fluids to correct dehydration and electrolyte imbalances. Diagnostic bloodwork is done to identify possible underlying disease.

A feeding tube may be passed through the nose into the stomach or placed surgically in the esophagus via an incision in the neck.

With appropriate care, most patients survive although recovery often involves 3-6 weeks of tube feedings.

#3. Please seek veterinary care promptly if your cat does not eat for 24-48 hours. Hepatic lipidosis is less costly to treat and the prognosis is better the sooner treatment starts.

Your cat evolved to be a superb hunter. Along the way, her body adapted to a diet high in animal protein with a unique physiology and metabolism. Here are three things to remember when feeding your cat:

Choose a food formulated for cats to ensure that she will get all the essential amino acids she needs and enough protein.
Cats can digest carbohydrates that have been processed appropriately if they consume sufficient protein.
Make sure your cat eats every day. Seek veterinary care if she does not eat for 24-48 hours.

references

1. Danks, Lee. “The cat as a carnivore: proteins, carbohydrate and beyond” https://www.veterinary-practice.com/article/the-cat-as-a-carnivore-proteins-carbohydrates-and-beyond (viewed 4/29/23)

2. Schermerhorn, T. Front. Endocrinol., 03 December 2013, Sec. Clinical Diabetes,Volume 4 – 2013 | https://doi.org/10.3389/fendo.2013.00188

3. Laflamme, Dottie “Focus on Nutrition: Cats and Carbohydrates: Implications for Health and Disease”, Nutrition Compendium January 2010 (Vol 32, No 1). https://www.vetfolio.com/learn/article/focus-on-nutrition-cats-and-carbohydrates-implications-for-health-and-disease

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Reducing Your Cat’s Carbon Pawprint: Insect-based Foods

Posted on April 16, 2023April 19, 2023 by felinepurrspective_u3q4o6

Can insect-based cat food help you reduce your cat’s carbon pawprint?

Sustainability is a word you hear a lot these days, as more and more people compete for natural resources and deal with the effects of climate change. Sustainability is defined as “meeting the needs of the present without compromising the ability of future generations to meet their own needs” (United Nations Brundtland Commission 1987). So, you recycle plastics, take reusable bags to the grocery store, and limit the use of your car to reduce your “carbon footprint”.

How can you care for your cat sustainably? How can you go about reducing your cat’s carbon pawprint? In this post, we will talk about one of the recent trends in pet food aimed at sustainability: the use of insects as a food source (Reference 1)

reducing your cat’s carbon pawprint

Do Insect-based Foods Provide Sufficient Nutrition for Cats?

Our cats are obligate carnivores and are designed to eat primarily meat. Since many of our cats live indoors with us, they are not out hunting – we provide them meat-based cat food. Raising food animals (chickens, cattle, pigs…) for pet food produces significant amounts of greenhouse gases (carbon dioxide, methane, water vapor…) and so is not very sustainable.

Insect Nutrition

Meal made from insects has as much protein as animal meal.
Insects have amino acids that are very similar to those in animals and cats are able to digest these.
Insect larvae are a good source of energy due to their fat content.
Insects are rich in minerals and provide necessary dietary fiber.
Insects are more protein dense – per weight, it takes 3 times more chicken leg meat to provide the same protein as insect meal.
Insects make up 2% or more of a feral cat’s diet.

Reducing Your Cat’s Carbon Pawprint by Feeding Insect-based Foods

Insects require less water and land use than food animals.
There are lower greenhouse gas emissions when farming insects compared to food animals.
Mealworms and fly larvae convert 45-55% dietary protein into edible body mass compared to the 33% conversion rate of a chicken.
Insects can feed on fruit and vegetable by products, household waste, slaughter plant waste and convert this into edible food.

What Insects are Used for Pet Food?

There are three insects currently used in animal foods: black soldier fly larvae, mealworm larvae, and adult house crickets. Black soldier fly larvae are most commonly used in pet foods.

Are Insect Foods Safe for Our Pets?

The insect larvae are blanched, chilled or frozen, then dried and ground into meal. In the process, moisture is removed, reducing microorgansims and inactivating enzymes that cause spoilage. Heat treatment of the meal when making pelleted foods helps reduce bacteria and microorganisms.

Most insect bacteria and viruses usually do not affect animals and humans. However, insects can be vectors of some pathogens, parasites, and prions. Feeding the insects on vegetable waste (and not animal waste) makes insect food safer.

More studies aimed specifically at cats eating insect-based foods are needed.

Do I want my cat to eat bugs?

In Asia, Africa and South America, it is not uncommon to find insects on the menu. Chapulines or fried grasshoppers can also be found in restaurants in Mexico and even in California and Texas. However, insect consumption is not widespread in western countries.

Researchers from Oklahoma State University conducted a survey of 1,021 Americans in 2021 to see if they would be more willing to consume food containing powdered crickets than raw oysters (a food that although widely eaten is viewed as “yucky” by some). The findings: about one-third of Americans are willing to both try and consume insect products on a regular basis, provided they are tasty and safe to eat. (see Reference 2)

Another survey (Reference 3) in the United States that targeted dog owners found that participants:

were more likely themselves to try food made with insect flour than to eat the whole insects
were more willing to incorporate insect meal but not whole insects into their dogs’ diets.

Where Can I Buy Insect-based Cat Food?

A casual Internet search turned up a handful of companies marketing cat foods with insect protein. Most of these are based in Europe and Asia. The only cat food that I could easily purchase in the US is made by the Canadian company Catit. Catit offers dry cat food mixes of insect protein with chicken or herring called Catit Nuna. I contacted Catit regarding feeding trials with these foods. They responded that Catit Nuna is formulated by pet nutritionists and has undergone feeding trials per AAFCO protocols for acceptability, digestibility and palatability.

Insect-based cat foods certainly sound like they may offer some options in reducing your cat’s carbon pawprint. However, it looks like we will need to wait for more research and development before these foods become mainstream.

REFERENCES:

Valdes et al., Insects as Feed for Companion and Exotic Pets: A Current Trend. Animals 2022, 12, 1450. https://doi.org/10.3390/ani12111450
Melissa Reed, Bailey F. Norwood, W. Wyatt Hoback, Angel Riggs, A survey of willingness to consume insects and a measure of college student perceptions of insect consumption using Q methodology, Future Foods,Volume 4, 2021,100046,ISSN 2666-8335, https://doi.org/10.1016/j.fufo.2021.100046.
Jennifer E. Higa, Matthew B. Ruby, Paul Rozin, Americans’ acceptance of black soldier fly larvae as food for themselves, their dogs, and farmed animals, Food Quality and Preference,Volume 90,2021, 104119, ISSN 0950-3293, https://doi.org/10.1016/j.foodqual.2020.104119.

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Feeding the older, skinny cat

Posted on June 5, 2022June 5, 2022 by felinepurrspective_u3q4o6

Cat on Baby Scale — This scale does not tip when your cat walks on it. I have added a non-skid mat.

Feeding the older, skinny cat can be a challenge. Older cats do not digest food as efficiently as younger ones and can require more calories. Due to disease and natural aging processes, the older cat often suffers from a reduced appetite. Reduced appetite means that less food is eaten. Less food eaten means the cat will lose weight and muscle mass.

Reduced appetite in the older, skinny cat can be due to:

Chronic kidney disease which can cause nausea
Pain due to dental disease or arthritis
Decreased odor and taste sensitivity (part of the aging process).

How can you get your older, skinny cat to eat better?

Offer a palatable food with the appropriate nutrients
Feed her in a way that mimics a cat’s natural behavior
Use appetite stimulants if necessary

palatable, nutritious food

“Senior” Diets

A recent study by researchers at Oregon State, Colorado State, and University of California, Davis found that the only difference between commercially available “senior”diets and the adult diets was that there was higher fiber in the senior diets. So find an adult food your cat likes – preferably one that has been evaluated in a feeding trial.

A therapeutic diet may be recommended by your veterinarian if your cat has kidney disease or another medical condition.

“Aging Cats Prefer Warm Food”

Ryan Eyre and colleagues investigated the effect of temperature on how much older cats eat. Thirty-two cats between 8 and 14 years of age participated in a “two bowl” study of a chunks and gravy food at different temperatures. The food was refrigerated or heated as needed to 43° F , 70 °F and 98 °F.

In a series of trials, each cat was presented with one bowl of colder food and a second bowl of warmer food. The amount of food consumed by the cats was recorded. The researchers also measured 1) thickness of the gravy at the different temperatures and 2) the volatile compounds released when the food was heated.

What they found:

There was no change in gravy thickness with temperature, so the texture of the food remained the same.
Heating increased the release of volatile compounds associated with a “meaty” flavor
Heating decreased the amount of volatile compounds that give rise to scents like orange peel

The cats preferred the warmer food in each of the pairs tested. They overwhelmingly preferred the food heated to 98 °F.

Other reasons cats may like warmed food:

The warmest food had a temperature similar to the prey a wild cat would eat – so maybe a little bit of instinct is at work here.
Heat is thought to activate taste receptors. Cats are thought to have about 470 taste buds and have taste receptors that detect salt, sour, bitter, and umami (meaty). So, heating food may also make it more palatable to cats by making it taste more “meaty”.

Heat your cat’s food before serving it – make sure to test before feeding. It should be “baby bottle” warm

Feeding your older, skinny cat: mimic natural feeding behavior

Feed small meals frequently
Use food puzzles to engage the cat in foraging behavior
Put food out in different locations
Consider elevated feeding stations for arthritic cats

Surefeeder for Cat — Athena’s Surefeeder opens only for her. Note the bubble on the back to keep the other cats out.

Reduce inter-cat stress in multi-cat households

Cats prefer to dine alone so have multiple feeding stations
Make sure that more dominant animals do not keep the older cat from eating
Investigate strategies to protect your older, skinny cat’s food – for example, consider a microchip feeder

medical intervention – appetite stimulants

Mirtazapine: Tetracyclic antidepressant that stimulates appetite in cats. Mirtazapine comes in pills and a transdermal ointment called mirataz. Mirataz is FDA-approved for cats.
Capromorelin stimulates the production of Ghrelin, a hormone your stomach produces and releases. It signals your brain when your stomach is empty and it’s time to eat. Capromorelin (Elura) comes in an oral liquid for once daily administration. It was developed to manage weight loss in cats with Chronic Kidney Disease.

Make sure your old cat eats – fasting longer than 2-3 consecutive days can result in hepatitis lipidosis, which can be fatal if not treated promptly

Keeping your older, skinny cat well-fed is essential to maintaining a good quality of life for him or her.

Warm canned food

Feed small meals frequently

Talk to your vet about an appetite stimulant if necessary.

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How to help your cat lose weight

Posted on March 6, 2022March 6, 2022 by felinepurrspective_u3q4o6

Your cat went in for her annual exam and your vet suggests that she lose some weight. Most likely, you were also given some daily calorie estimates and food amounts. Perhaps your vet recommended a weight loss food. What’s next?

Three ways to help your cat lose weight:

portion control
feeding multiple small meals
keeping your cat moving

Portion Control

If you have not done this already, measure how much your cat is eating. Make sure to include treats and table scraps. If your cat is a grazer, put out a measured amount of food in the morning and measure what remains the next morning, 24 hours later.

Gradual weight loss is best. The rule of thumb is to cut your cat’s food portion by no more than 10-20% at a time. Drastic food reduction can lead to a cat who is frantic for food, begging and sometimes biting you in his quest for food. It may take some time to reach the calorie allowance recommended by your vet.

The Behavior of Feeding: Multiple small meals daily

Now that you know how much to feed, let’s look at how you feed. Cats have small stomachs; in the wild, they follow a nocturnal schedule, hunting and feeding about 4 times, starting in the late afternoon and finishing in the morning. In between hunts, the cats nap and groom; sometimes they play with the kittens.

Your cat is designed to eat multiple small meals a day. If your cat is a grazer, this is what she is doing and she may be fine with her portion set out in a bowl for the day. Other cats may want to eat everything at once, which can lead to GI upset and boredom. To help your cat lose weight, portion control can be done by using a timed feeder or you can follow a feeding schedule. Here is a sample schedule for a working owner feeding 4 meals a day.

AM before leaving for work – meal feed: canned or dry food
Day Time: food puzzles or feeders with dry or canned food
PM arrive home from work – meal feed: canned or dry food
Bedtime Snack: Treat Time – treat toss or training

Strategies for the Multi-Cat Household

Life is rarely simple – often you have one cat who needs to lose weight and a “skinny” one who is a “grazer”.

Technology to the Rescue: Microchip feeders

SureFeed Microchip Pet Feeder:

This plain vanilla feeder is ideal for grazers who tend limit themselves. The feeder is programmed to sense an individual cat’s microchip and only opens for the particular cat. Put the “skinny” cat’s food in the Surefeeder and the “fat” cat’s food in a timed feeder or in bowls spread out through the house. The Surefeeder can also accommodate canned food.

Timed Microchip Feeders:

These feeders sense the tag on the pet’s collar and allow a pet a certain amount of time to eat. Many of these feeders can accommodate more than one pet if they are eating the same food. However, some reviews note that a persistent pet will refuse to leave when the doors try to shut, keeping his head in the bowl and continuing to eat.

The Meowspace:

This is a ventilated transparent “box” with an access door. Some models have a microchip flap while others have a magnetic flap. The Meowspace also has a timed access option, allowing the cat to access the “space” only at certain times of the day.

The DIY version: You can make a “meow space” out of a closet by installing a microchip cat flap in the closet door. To add a “timed” option, place an inexpensive automatic feeder in the closet.

Low Tech Solutions to help your cat lose weight:

Some cats prefer to be up high while others are “ground dwellers”. If this is the case, you can feed the cats who climb up high on a shelf, top of a bookcase, or on the upper level of a cat tree while the other cat eats at ground level. Another option is to meal feed and separate the cats in different rooms when feeding.

keeping your cat moving

In the wild, cats prowl around looking for food. You can mimic this behavior by placing portions of food in different places around the house. Your cat has to go look for it. This is the idea behind Doc & Phoebe’s indoor hunting system.

Puzzle feeders also can also stimulate and engage your cat while feeding. Make sure to introduce your cat to his puzzle feeder gradually, increasing the food in the puzzle and decreasing his food in the bowl as he learns to use the puzzle feeder.

Using the indoor hunting system or puzzle feeders can be challenging in the multi-cat home: some cats will catch on more quickly than others, getting more to eat in the process. Indoor hunting and food puzzles may not be appropriate. In that case, help your cat lose weight by engaging him in a daily play session or taking him for a leash walk outside.

Treat Toss
If you are feeding dry food, you can make one of the meals a tossing game. Dental treats or dental kibbles are large and can be tossed for your cats to hunt down. Space the cats out so each cat has his own “territory” to hunt in and make the rounds, tossing the kibbles. This is also a great way for the cats to interact with guests, who usually enjoy tossing the treats to the eager felines!

Help your cat lose weight – reduce his risk of medical problems such as diabetes and arthritis, and form a closer relationship with your cat through daily play and exercise activities.

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Cats eating from a food puzzle: contrafreeloading?

Posted on February 6, 2022February 13, 2022 by felinepurrspective_u3q4o6

Why slide a block aside to uncover food when there is food freely available in a bowl nearby? Psychologists call the behavior “contrafreeloading” – it refers to animals (and people) preferring to work for food when there is freely available food.

This behavior sounds counter-intuitive – after all, you would expect an animal to choose the option that requires the least effort. But psychologists and behaviorists propose that contrafreeloading is a manifestation of the SEEKING system – one of the seven basic emotional systems proposed by Jaak Panksepp, the father of “affective neuroscience”. Affective neuroscience studies how the brain produces emotional responses.

The SEEKING system is thought to be the strongest of the primary emotional systems. It’s what gets animals out looking for food, looking for a mate, looking for other resources.

When the SEEKING system is activated

the brain releases dopamine, a neurotransmitter that makes you feel pleasure.
It is the rewarding feeling you get when you are looking for something and find it.
Once you’ve found the object of your desire, the brain shuts off the dopamine and other emotions are activated.

So the action of SEEKING can be more enjoyable than finding what you’re looking for. Think about those travel advertisements that tell you that “getting there is half the fun”!

Dogs, mice, rats, birds, monkeys and even humans have been found to engage in “contrafreeloading”.

cats eating from a food puzzle: contrafreeloading?

A recent study by Mikel Delgado and colleagues enrolled 20 domestic cats to observe this behavior. They investigated the behavior of cats eating from a food puzzle versus eating food from a tray. Cats eating from a food puzzle have to manipulate the puzzle to get the food out.

The cats were first trained to the puzzle by having increasing amounts of their food in the puzzle and decreasing freely available food on a tray.

At first, only 25% of their food was in the puzzle.
Once they started to eat some food from the puzzle, the amount in the puzzle was increased to 50%, then to 75%.
Three cats refused to eat any food from the puzzle and were dismissed from the study.
Cats were exposed to the equipment for 4-12 days before testing.

Cats underwent 2-4 trials a day, no less than 2 hours apart. The puzzle and the food tray were placed next to each other, and were the same distance from the cat. The cat’s daily food ration was divided equally between trials. In each trial, the food was divided up equally between the puzzle and the food bowl.

Cats are freeloaders!

Half of the cats ate less than 10% of their food from the puzzle. All of the cats ate most of their food from the tray – no cats were strong “contrafreeloaders”. Eight cats were definitely “freeloaders” – the rest seemed willing to do some contrafreeloading. Although a number of cats approached and sniffed the puzzle first, all the cats ate from the tray first.

Cats seem to be one of the few species that does not seem to be inclined to work for their food in a captive environment. But cats have been known to STOP EATING to hunt prey – that certainly involves working for food!

why are cats freeloaders?

Cats eating from a food puzzle are engaging in “foraging” behavior.

Cats are solitary predators

They must conserve their energy for the energy burst needed when hunting
They are not above scavenging a free meal
Maybe it makes sense to a cat to eat some of the “free food” first before putting energy into foraging?

Is hunting more “fun”?

Is the SEEKING system stronger for cats when they hunt compared to when they forage?
Do their brains release more dopamine when they are stalking, pouncing and chasing?
Do their brains release less dopamine when they are foraging?

cats eating from a food puzzle

Does this mean you should not bother offering your cat food puzzles for enrichment? No – food puzzles help reduce boredom and engage cats mentally. Indoor cats in particular may benefit from using food puzzles.

training your cat to use a food puzzle

Start by offering 25% of the meal in the food puzzle and 75% in a bowl or tray.
When your cat is eating some of the food in the puzzle, increase the amount of food in the puzzle to 50% and decrease the amount in the bowl to 50%.
Increase the amount of food in the puzzle to 75%; decrease the amount in the bowl to 25%
When your cat is eating most of his meal in the puzzle, offer him the puzzle only.

A demonstration can help your cat learn. Cats are able to mimic the actions of humans and they are able to adapt human actions to their own bodies.

selecting a food puzzle

Cats using a puzzle feeder — Two cats using the Catit Food Tree.

There are many food puzzles you can make or purchase. Start your cat with a “beginner” puzzle and see what he likes to do. My ex-feral cat, Gus, easily mastered the Catit “Food Tree” but it was almost a year or so before he was willing to try a flat panel puzzle where he had to move pieces to uncover the food.

You may want to make some puzzles first to find out your cat’s preferences before purchasing one. Visit foodpuzzlesforcats.com!

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Arthritis Supplements for cats – do they work?

Posted on December 19, 2021 by felinepurrspective_u3q4o6

A cat receives an injection of polysulfonated glycosaminoglycans.

It is thought that almost 40% of all cats have clinical signs of arthritis and 90% of cats over age 12 have damage to the joints that you can see on x-rays. Cats are such masters at hiding pain that we are now thinking that arthritis is there earlier, pain is happening and we may not be able to see it on x-rays yet.

What if we could be proactive and start some kind of treatment before our cats even seem painful? Could we slow the deterioration of the joints? What arthritis supplements for cats are available and do they work?

The motivation behind writing this post was to help my youngest cat, 5 year old Gus, who showed some indications of spinal arthritis in his x-rays. Should I begin a supplement with him? I was astounded by the sheer numbers of arthritis supplements for cats on the market and the astounding claims they made.

arthritis supplements for cats – do they work?

Arthritis supplements for cats on the market now range from supplements used by humans to homeopathic remedies. Clinical trials are rare to non-existent on many of these products. This post addresses the more common products and ones that have had some double-blinded clinical studies done.

glucosamine/chondroitin,
omega fatty acids/ green lipped mussel extract
polysulfated glycosaminoglycans

Glucosamine/chondroitin

Glucosamine occurs naturally in cartilage, the flexible connective tissue found throughout the body – for example, in the external ears and the surfaces of joints. The supplement can be made synthetically in the lab or harvested from the shells of shellfish.

Some human studies have shown oral glucosamine may help with pain relief and slowing of joint degeneration in people suffering from osteoarthritis. However, in general, the results from these studies are not conclusive.

Dasuquin is a commercially available formulation of glucosamine/chondroitin for cats. It is a dietary supplement in a capsule that is sprinkled on food. The product has been evaluated for safety.

A recent double-blinded study of Dasuquin enrolled 59 cats with Degenerative Joint Disease.

All 59 cats were given a placebo for 2 weeks.
Then 29 cats received the supplement for 6 weeks while another 30 continued to receive the placebo.
The cats were evaluated by using an at-home accelerometer (like a kitty “fit bit”), owner observations and vet exams through out the study.
The study showed a strong placebo effect – 78% of the cats were more active while on the placebo.
Cats on the supplement did not show any statistically significant improvement over cats on the placebo.

However, the study did raise some questions:

The “kitty fit-bits” showed that the least active cats at the start of the study became more active on the supplement. Were these cat more painful to begin with?
The placebo was given in the first two weeks of the study when owner enthusiasm would have understandably been highest and owners would have been looking for improvement.

More research is needed – perhaps a different study design?

Omega Fatty acids (fish oils)

Supplementation with fish oils has shown some benefit for arthritic cats. A double-blinded study showed that cats supplemented with fish oil for 10 weeks were more active, going up and down the stairs more, jumping higher, not walking as stiffly and were more interactive with their people. This study used owner evaluation to assess the cats’ improvement.

Fish oil can be given as a dietary supplement (Welactin) or fed as a therapeutic diet, such as Hill’s j/d.

Side effects of fatty acid supplementation include GI upset and reduced blood clotting. There is some controversy over how much fish oil is enough. Additionally, fish oil can add quite a bit of calories to your cat’s diet and could result in weight gain, taxing your cat’s joints further.

Merial’s Antinol for Cats supplement is based on fatty acids from green-lipped mussel extract. There are a number of case studies where the supplement has been given to cats with good results for cardiac and dermatological issues, in addition to joint and mobility problems.

Polysulfated Glycosaminoglycans (PSGAGs)

This product is available under the brand name Adequan. It is the veterinary version of Arteparon, used in humans.

Decreases the breakdown in cartilage. The PSGAG’s allows the cartilage to hold more water, making it resistant to degradation.
Adequan has been extensively studied in dogs and horses for over 20 years and is FDA-approved for these species
Available by prescription.
Given by subcutaneous injection in cats with generally good results.

The jury is still out on most of the arthritis supplements for cats. Given at the manufacturer’s recommended dose, these products are safe and may be effective. Considering the individual nature of pain, some cats may respond favorably while others do not. Once again supplements are basically unapproved drugs so there is not the rigorous evaluation that accompanies FDA approval.

Your vet is your best resource on arthritis supplements for cats. He or she will be able to recommend a supplement or diet that is appropriate for your cat and is compatible with other medications or medical conditions your cat may have. In particular, combining supplements should be done with care – glucosamine, fatty acids and Adequan all effect how your cat’s blood clots.

So, what will I do for Gus?

My vets recommended the Adequan injection, citing the robustness of the canine studies and the fact that it is an injection – there is a greater confidence that the cat will get the supplement. We are not depending on him to eat something.

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