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Feeding Your Cats
One of your most important responsibilities as a
cat owner is to provide your cat with the necessary nutrients required for its growth and
maintenance. Cats need a diet that contains protein, fat, minerals, vitamins, and water.
Those nutrients are the building blocks of various structural body tissues; are essential
for chemical reactions (metabolism, catabolism); transport substances into, around, and
out of the body; supply energy for growth and maintenance; and provide palatability. Basic
minimum nutritional requirements for cats have been established by the Feline Nutrition
Expert (FNE) subcommittee of the Association of American Feed Control Officials (AAFCO).
Pet-food manufacturers use those standards when producing cat foods.
Types of Cat Foods
Commercial cat foods are formulated as dry, semimoist, and
canned. The products differ in water content, protein level, caloric density, palatability
and digestibility. The differences are primarily attributed to the processing methods used
by pet-food manufacturers. A quality cat food provides the necessary nutrients in a
properly balanced proportion.
- DRY FOODS
Dry foods contain 6 percent to 10 percent moisture. Cereals,
grain by-products, bone meal, fish meal, milk products, and vitamin and mineral
supplements are combined, extruded and dried into bite-sized pieces. The pieces are then
covered with flavor enhancers, such as digest or animal fat, giving the product increased
palatability. It takes less dry food on an as-is basis than other types of food to satisfy
a cat, because dry food has more dry matter and a higher energy content per gram fed. The
primary advantages of dry cat food are lower cost and convenience in allowing "free
choice" feeding. Generally, dry foods may be less palatable to a cat and have a lower
digestibility than the moister types. However, premium dry cat foods are comparable in
digestibility to grocery store brands of canned cat foods, and can exceed lower quality
canned cat foods.
SEMI-MOIST FOODS
Semi-moist cat food may be more appealing to some cats than
dry cat food. Moisture content is approximately 35 percent. However, after the package is
opened, palatability decreases and spoilage increases because of dehydration. These foods
can also be fed free choice. The cost is mid-range, between that of dry and canned food.
Semi-moist food resembles ground- or whole-meat tidbits. Meat and meat byproducts are the
primary ingredients. They are combined with soybean meal, cereals, grain byproducts, and
preservatives. Manufacturers add organic acids (phosphoric, hydrochloric and malic acids)
and sorbitol and dextrose to prevent spoilage and retain moisture in semi-moist cat foods.
CANNED FOODS
Canned cat food is quite popular with owners, despite its higher cost. Canned varieties
are highly palatable to cats, which can be helpful if your cat is a finicky eater. Canned
cat food has a water content of a least 75 percent, so it is a good dietary source of
water. When unopened it has the longest shelf life. Canned food is available in ration
sizes (12 to 22 ounce cans) or gourmet sizes (3 to 6 ounce cans). Gourmet canned cat foods
generally feature organ meats (e.g., kidney, liver) as their primary food ingredient.
Because some brands may be nutritionally incomplete, it is particularly important to read
the nutrition labels carefully on such specialty cat-food items. Gourmet canned foods may
induce food consumption in anorexic cats or meet increased protein requirements that occur
during wound healing or with protein-losing diseases.
Selecting Cat Food
Reading the nutrition label
on the packages is the best way to compare cat foods. Pet-food manufacturers are required
to supply certain nutrition information on the package. Labeling regulations are
established by the AAFCO and the United States Food and Drug Administration (USFDA) to
ensure compliance with federal and state feed regulations. The section labeled
"guaranteed analysis" lists the percentages of protein, water, fat, fiber, and
ash. The minimum amounts of crude protein and fat and the maximum amounts of crude fiber
and sometimes ash, and water must be listed on the label. Although this information is
required, it is of little value since it does not represent the actual amounts of those
nutrients present in the product, only minimum and maximum amounts.
In 1993, the Association of American
Feed Control Officials (AAFCO) approved the discretionary listing of a cat food's caloric
content on the label. Pet food manufacturers determine the caloric content of their
product by using a standard nutrition formula based on metabolized energy per gram from
protein, fat, and carbohydrates. A food's caloric content will help cat owners in
determining how much to feed their cats. Basically, the average adult cat needs about 30
kilocalories per pound of body weight per day. Individual needs may differ from that
average according to age, environment, and activity level. The ingredients list includes
all items used in the product, including flavor enhancers, artificial colors and
preservatives. The items are listed in decreasing order by weight. Meat, meat by-products,
or seafood should be listed among the first few items; that indicates that the product
probably contains enough animal-source ingredients to supply taurine and essential fatty
acids. Also, be sure that niacin and vitamin A have been added, since those vitamins are
sensitive to food-processing methods. The nutritional claim states the stage of a cat's
life cycle for which the food is a complete and balanced product (e.g., growth,
maintenance, pregnancy). It should also state that it meets the requirements of the AAFCO,
preferably by animal-feeding trials. Feeding a cat a product that does not have a
nutritional claim on the label cannot guarantee a complete and balanced diet for the
animal. Feeding directions are usually provided on the label. This provides a guideline
for owners on quantity and timing of feedings. However, owners need to adjust feeding
portions to keep their cat at the ideal body weight.
Homemade Diets
Formulating your own cat
food is a difficult and time-consuming process. Also, the nutrients in the formula may not
be available in the right quantities and proportions to be beneficial to your cat.
Therefore, it is usually recommended that the cat owner use a commercial, nutritionally
balanced product, unless a veterinarian recommends a recipe for a home-formulated ration.
Basic Guidelines on Feeding Cats
Environmental conditions
can affect a cat's eating habits. For example, heavily trafficked areas, noise, the
presence of other animals, dirty food containers, or nearby litter boxes can deter a cat
from eating. Therefore, try to be sensitive to your cat's eating behavior and make
necessary adjustments for optimum feeding conditions.
The amount fed is based on caloric
content, quality of nutrients, and the cat's special dietary needs. Meat scraps from the
table and specialty cat treats can be fed from time to time but should not be a steady
diet for your cat. Those treats often lack the proper proportion of basic nutrients a cat
requires to maintain its health. A rule of thumb is not to let treats exceed 10 to 15
percent of the cat's daily diet. Although raw meat is an excellent source of many
nutrients, it is not recommended as food for cats, because it is a potential vehicle for
toxoplasmosis. Also, salmonellosis can occur from contaminated meat and spoiled meat
harbors various bacteria that can upset the digestive system.
VARIETY
Feeding your cat two or three different cat foods provides flavor variety. It also
prevents the cat from developing a preference for a food that may not be 100 percent
nutritionally balanced. However, if your cat is already a finicky eater that craves an
unbalanced diet, you can break the habit. A good method is to convert it to a new taste
slowly by mixing the new food with the old. Increase the amount of new to old food by
one-quarter increments (i.e., 1:4, 2:4, 3:4) until your cat accepts the new food. However,
if your cat is content with a single nutritionally complete and balanced cat food, there
really is no reason to change its preference.
VITAMIN AND MINERAL SUPPLEMENTS
A cat food that meets or exceeds the FNE subcommittee's nutrition standards assures an
adequate supply of vitamins and minerals in the diet. Therefore, the use of vitamin and
mineral supplements, including brewer's yeast, is unnecessary. The addition of a
supplement without a veterinarian's approval may actually harm your cat.
FOOD STORAGE
Refrigerate any unused portion of canned cat food, to maintain quality and prevent
spoilage until the next feeding. To prevent possible digestion problems related to
temperature differences, refrigerated food should be brought to room temperature before it
is offered to your cat. Canned rations can be divided into two servings per day. Store
unused portions of dry cat food in a cool, dry location, and use all the food within six
months of purchase. Lengthy storage decreases the activity and potency of many vitamins.
Storing dry cat food in an airtight container will prevent further nutrient deterioration
and help maintain palatability.
Dietary Considerations
Feline Lower Urinary Tract
Disease (FLUTD)
Various studies have provided new dietary considerations when feeding a cat that has had FLUTD. The pH of the urine influences the formation of certain
specific crystals. Struvite crystals rarely form in urine with a pH of less than 6.4,
whereas they often appear when the urine pH rises to above 7.0. Diet influences urinary
pH. For example, when dry food is available to a cat "free choice," the cat's
urine pH decreases.
Current feeding recommendations
for FLUTD cats are as follows:
Feed diets that ensure adequate
acidification. However, do not add urine acidifiers to diets that are already acidic.
Overacidification can cause metabolic acidosis, resulting in impaired kidney function and
mineral imbalance that includes potassium depletion. Also, urine that is too acidic
provides a good environment for another mineral deposit (oxalate crystals) to form which
can also cause urinary obstruction.
Provide fresh water at all times. The
more that a cat drinks, the less chance crystals and uroliths (small mineral stonelike
deposits) will form.
Restrict dietary magnesium intake to
40 milligrams per 100 kilocalories and phosphorus to 200 milligrams per 100 kilocalories
if adequate urine pH (6.4 or less) is maintained.
Feed small meals on a frequent basis
or feed free-choice dry foods.
Special Nutritional Needs
Throughout a cat's life, there are stages in which the cat requires different nutrients.
Those include kittenhood, pregnancy, lactation, and finally, old age. There are also
special dietary needs associated with certain nutrition-sensitive diseases (food
allergies) and chronic organ system diseases (kidney disease, liver disease, congestive
heart failure and diabetes)
Common Feeding Problems
Avoid
these common feeding
errors |
Overfeeding can lead to the number-one
nutritional disease, OBESITY. Excessive body
weight can increase the risk of liver disease, heart disease, respiratory problems, and
constipation. Furthermore, fat cats are at a greater risk of developing diabetes and
arthritis. Pet food manufacturers have formulated diets that have fewer calories per gram
that may be helpful in treating obese cats. Feeding dog food to cats is a common error,
especially if dogs and cats are in the same household. Dog foods are developed for the nutritional needs of dogs, not
cats. There can be serious consequences if a cat's diet is deficient in protein, taurine,
niacin, vitamin A, and fatty acids.
Overdosing with
vitamin and mineral supplements has been known to cause severe medical problems in cats.
Physiological imbalances caused by excess vitamins and
minerals can lead to the binding of other nutrients. Overdoses of vitamins A and D are
more common than deficiencies of those vitamins, because of unnecessary supplementation of
an already balanced diet.
Exclusively
feeding meat or fish results in an unbalanced diet and causes related nutritional
diseases. Diets containing large quantities
of fish can cause yellow-fat disease (steatitis), a result of vitamin E deficiency.
Nutritional secondary hyperparathyroidism is usually caused by all-meat homemade diets
that are deficient in calcium, thus creating a mineral imbalance in the calcium-phosphorus
ratio. The disease most commonly occurs in kittens that are rapidly growing. |
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