Diet plays an important role in the endurance potential of canine athletes. The Alaskan sled dog might be considered the ultimate canine athlete, sometimes pulling a sled more than 1,000 miles in subzero temperatures. Providing a well-balanced diet is essential to meet the special needs of dogs in such nutritional-stress situations. Not only should the diet fed to these dogs be high in protein, but it also should be high in fat, which serves as the major energy source for exercising muscles.
A high-fat diet can help muscles burn fat more efficiently. During sustained exercise, fatty-acid oxidation is the primary source of energy for the muscles. Increasing the efficiency of fat metabolism spares the body’s use of carbohydrates, and because most dogs have in excess of 10 to 50 times more energy stored in fat than in muscle glycogen (carbohydrate), this might boost the animal's exercise performance.
IAMS™ studies1 have shown that in trained sled dogs as in ordinary dogs, exercise performance was enhanced by switching from a low-fat to a high-fat diet (from 25 to 65% of calories from fat), as indicated by increased:
When dogs were switched back to a low-fat diet, all of these criteria decreased to their previous values.
These results indicated that by increasing the availability of fat stores and capacity to metabolize fat for energy, a high-fat diet promotes exercise endurance in canine athletes.
1 Reynolds AJ, et al. “The effect of diet on sled dog performance, oxidative capacity, skeletal muscle microstructure, and muscle glycogen metabolism.” Recent Advances in Canine and Feline Nutritional Research: Proceedings of the 1996 IAMS International Nutrition Symposium. Carey DP, Norton SA, Bolser SM, eds. Wilmington, OH. 1996. 181–198.
Beet pulp is an important source of fiber that is good for helping your dog maintain intestinal health and can enhance his ability to absorb ingredients. Beet pulp is the material that remains after sugar is extracted from sugar beets.
There are two types of fiber: Nonfermentable and fermentable. Nonfermentable fiber remains undigested as it passes through a dog's intestines, providing bulk to move wastes out. Cellulose is an example of a nonfermentable fiber.
In contrast, fermentable fiber is broken down in the intestines into short-chain fatty acids that provide energy for cells that line the intestine.
Moderately fermentable fiber does both: It provides bulk to move waste and supplies energy to cells lining the intestine. Beet pulp is a moderately fermentable fiber. IAMS™ products contain a patented, moderately fermentable fiber, beet pulp, to keep your dog's digestive system healthy.
Beet pulp contains no toxins and is not harmful. It is a very safe fiber source. Beet pulp does not affect coat color. There is nothing in beet pulp that can affect coat pigment—the inside is light in color, and the dark outside peel is not used in our foods.
By definition, beet pulp is the material left over after the sugar is removed from sugar beets. Therefore, beet pulp contains no sugar.
There is no evidence that beet pulp causes bloat. Bloat (gastric dilatation-volvulus or GDV) is related to a stomach defect that delays the stomach’s emptying. It is believed that bloat is not related to diet or ingredients, such as beet pulp. However, the cause of bloat remains unknown.
IAMS has conducted extensive research on many types of fiber. The results of this research point to the fact that beet pulp maintains intestinal health and works with other nutrients to provide optimal nutrition in all of our products, including IAMS™ ProActive Health™ Adult MiniChunks. No other food manufacturer can match our formulas. Only IAMS holds a patent for moderately fermentable beet pulp.