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Principles of Dog Nutrition

Principles of Dog Nutrition

By T. J. Dunn, Jr., DVM

Pet nutrition principles for feeding dogs continue to evolve. An example of how far we've come concerns what we veterinarians, 30 years ago, used to call "All Meat Dogs." These pathetically sick and dying dogs were coming in to clinics, thin, weak, with hair loss and metabolic imbalances as a direct result of eating a nationally advertised "All Meat" canned dog food.

Nearly everyone at that time thought that because dogs were carnivores (they're technically omnivores) that "all meat" diets must be the best thing for them! We know now that dogs cannot survive if fed 100% meat for extended periods.

Since then, pet food manufacturer's knowledge has changed and they now make some properly formulated foods. We've all learned much more about just what it takes to put together the right combination of ingredients in the proper ratios to create a nutritious diet.

Unfortunately for the pet food purchaser, and worse for the dog, there are available various brands of foods that, despite what the label may claim, are NOT a good source of nutrition for your dog. Some are actually harmful!

However, did you know that some of the most popular and most trusted brands of dog foods are purposely formulated to just meet the minimum requirements of an average dog? These formulations are set up so that the pet food can be sold at a targeted lower price in order to appeal to the consumer group that will not spend higher amounts on dog food.

A dog food that just barely meets the minimum nutritional requirements of a dog will have cheaper ingredients, such as grains, instead of higher quality ingredients that cost more.

And meeting the minimum standards for an average dog means statistically some dogs won't get what they need.

What if your puppy or adult dog isn't average? No one has ever shown me what an average dog looks like so how am I, after working with tens of thousands of dogs over thirty years of practice, supposed to know the difference between an average dog and one that isn't?

How will you know if your dog is average? And even if you did know, would you really want to feed it a food that was specifically designed to only meet it's minimum requirements?

Buy a cheap dog food and you will be feeding your dog cheap ingredients. Cheap ingredients are less efficiently digested, there's more fecal waste production, and the dog won't be as healthy as when fed higher quality (meat-based) dog food.

Another example of how poorly regulated the pet food industry is concerns preservatives.

There are all kinds of agents used to keep the nutritional value in that bag or can of dog food from deteriorating over time. Chemicals such as Ethoxyquin and BHA (butylated hydroxyanisole) have controversial reputations as to safety. Most experts will tell us they are safe, however, many pet owners would rather avoid chemical preservatives and instead use substances that don't have murky reputations. Currently, pet food consumers have driven the popularity of more "natural" preservatives such as vitamin E or vitamin C.

Naturally we consumers, when given a choice, generally pick a food preserved with vitamin E and have every reason to expect that the food has no other preservatives in it.

Well, sorry. It still could have other chemical preservatives in the food if the manufacturer purchased the fat and protein from suppliers who, prior to shipping to the manufacturers, added chemical preservatives. So the food manufacturer's label says, "preserved with Vitamin E" because that's all they added. You have no way of knowing if prior to what the manufacturer did, someone else added other preservatives. In my opinion, the pet food industry really needs tighter controls and more specific labeling of their products.

In the meantime, you might be asking, "How do I pick out a good food for my dog?" There are some general rules to follow and concepts to keep in mind when choosing a good dog food.

Choosing a Good Dog Food

Making the right choice starts with reading the label's list of ingredients. By law the ingredients must be listed according to weight of the ingredient added in descending order. In other words, by weight of raw ingredient the main ingredient is listed first, second most prominent ingredient next, and so on.

The first three ingredients are the most important. It's easy to tell if the diet is vegetable based, with corn, rice, wheat, and soybean meal listed as the main ingredients; or if the diet is meat based, with meat, lamb, fish or poultry listed as the main ingredients.

I would always pick a meat-based diet over vegetable-based foods for optimum health for dogs. Now...here's the catch! I'm going to have to pay more for the meat-based diet! Responsible and caring dog owners should never let the price of the food dictate the purchase decision. In almost every situation with dog food, you get what you pay for. The higher the price the higher the quality.

I'll let you consider the converse of that. And the higher the quality of the ingredients, the greater the nutritive value for the dog. Plus, you will purchase less high quality food than cheap food since dogs must eat more low quality food to meet their nutritional needs.

Immediately you will notice that when feeding a high quality, meat-based food, the dog will need to consume fewer cups of it per day than a cheap diet; the dog will also pass noticeably less stool when consuming a high quality diet than with a grain-based diet.

Cheap dog foods -- and they are widely available and wrapped in all sorts of fancy labels -- will contain cheap ingredients that will be poorly digested and will lead, over varying lengths of time, to deficiencies in your dog's health. Stroll through the pet food departments of various pet food outlets and read the labels of the different products.

The cheap food will almost always be vegetable based and the more costly foods will be meat, poultry or fish based. Your dog has no control over your choice; so you have an obligation to provide good quality products that will optimize your dog's quality of life!

And don't forget to pay attention to the trick of "ingredient splitting." What the pet food manufacturer does, in order to make the ingredient list look better, is to break down a product such as corn into its different forms, then place each form of the ingredient into the ingredient list according to the amount of the form present.

For example, they will list ground corn, yellow corn meal, corn gluten, and corn gluten meal separately and thereby split up "corn" (which really should be listed as the main ingredient) in to places further down on the ingredient list to make it appear to the consumer that there is less corn in the dog food.

Should I Feed Canned or Dry ... or Both?

If dog owners had to choose one or the other, canned food or dry food, they should choose the dry. Canned food is generally 75% water, so 75% of your purchase price is going toward a non-nutritive ingredient that you can readily obtain from your own water faucet. Plus, there is an advantage to oral hygiene in the friction of the dry dog food, helping to keep the gums and teeth healthier than if the dog were eating only canned food.

The only time I recommend canned food is to someone who refuses to stop buying cheap dry food; the addition of canned food to a cheap dry food will generally improve the total diet. And just like the dry food, canned food has an ingredient list you can read to help guide your purchase decision. A dog being fed a high quality dry food does not require any canned food.

 Semi-Moist Foods

I never recommend semi-moist foods. You know the ones ... they're wrapped in cellophane and look like meat and have names that give the impression they're meaty. I often wonder why the manufacturers, if they want to associate these foods with meat, don't put any meat in them! They do put lots of food coloring, soybean meal, sucrose and preservatives like propylene glycol in them, though! Forget about the semi-moist dog foods.

Table Scraps

Many of my clients, when I query them about what they feed their dog, will proudly offer this statement, "... but we never feed table scraps!" And I respond, "Why not?" Dogs can be fed many foods that people eat, but there are exceptions -- such as the fact that some dogs are lactose intolerant, grapes on occasion can cause (kidney damage,) and overfeeding certain foods can create nutritional imbalances.

You, at home, could feed your dog a perfectly fine diet if you knew the right amounts of meats, vegetables, fruit, etc. to feed and in the proper ratios. But why bother when there are good diets already prepared for you by companies employing highly knowledgeable scientists with years of research backing them up?

Table scraps are perfectly acceptable to give to most dogs under certain conditions. And it is better to feed them to the dog than throw good food in the garbage. But you must remember that sudden changes in some dog's diet may promote diarrhea, vomiting and in the instance of providing too much fat all of a sudden, pancreatitis.

Most dogs eat more consistently, are less finicky, and are less likely to have digestive tract upsets if they are fed consistently every day. If you choose to feed table scraps, try to do it on a fairly consistent basis.

I am not a proponent of feeding bones to dogs. For one thing there is almost no food value in bones (although there is plenty of good nutrition in the attached muscle and fat). Don't believe me? Take a look for yourself to see just how little food value there is in bones.

 How Much To Feed

Every bag of dog food will give a suggested amount to feed relative to your dog's weight or breed. I'll give you a helpful hint... don't even bother to look at these suggestions. They'll only confuse you since they are imprecise and vague.

Keep in mind that every dog is unique (no wonder I can't find an "average" dog!) in it's metabolic rate (how fast it burns up calories) and nutritional requirements. Whether you feed "free choice" by keeping some food in the bowl all the time or "restricted" or "portion controlled" by feeding a certain amount once or twice a day, the very best way to judge if you are feeding the right amount is to look at the dog. If it appears too thin for its breed (remember, some breeds such as Setters and sight-hounds are normally "thin") then feed the dog more food. If the dog or puppy appears overweight, cut back on the amount fed.

Most dogs, probably 75%, if fed "free choice" will maintain optimum weight. The rest will become overweight and you, having complete control over what your dog consumes, will have to restrict the total amount of food intake to get that overweight dog back to a weight where it appears normal.

So the amount to feed varies with every dog. For example, you could have two dogs, each weighing 40 pounds, where one might require twice as much food as the other to maintain its weight at 40 pounds. So don't look at the food label to tell you how much to feed, look at the dog!

Future Concepts

Strange to say but I believe we dog lovers will be going back to the future in properly feeding our canine friends. Going back to Nature by feeding meat-based foods and including what we term "table scraps" in dogs' diets will surely be an improvement over some of the grain-based, cheap pet foods available today. Raw diets, frozen meat diets  and home made diets are here today and will be even more popular in the future because dog owners will see the excellent results these more natural diets achieve.

This is NOT to say that commercial canned and dry foods are not good for dogs and cats, either. I have personally examined 20 year old dogs and cats that we never fed table scraps but were fed only a brand name dry or canned food. There will always be a deserved place for commercial dry and canned pet foods; I just hope that the high quality ones are most utilized.

Is a Joint Health Supplement a necessity? 

dog joint mobility for development of healthy bones and joints in dogs nzOver the last decades, our dogs have been more and more domesticated, refining of the breeds, it all comes with a price. Most of us want our dogs to live as healthy and as long as possible. With healthy developed bones and joints our dogs will have a better chance to keep their mobility well into their later years.

In Summary 

Use common sense. Read the labels. If you do those two things, you will certainly avoid the cheap, plant-based dog foods with the fancy labels that try to make you think you're getting a good deal. Regards joint health supplements, choose natural and Prevention, Beats cure.

Remember ... your dog's health, more than any other single aspect, depends upon optimum nutrition.

 


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