News last update:6 Aug 2012

Corn is good fibre source in dog food

Nutritional biochemists in Illinois found that corn fiber shows promise as a more economical and healthier ingredient in dog food than some of the fibers now in use.

George Fahey and colleagues point out that the fiber content of dog food varies widely and is often of inferior quality. Many dog foods use fiber from sugar beet pulp. Corn fiber -- available in large amounts as a byproduct of ethanol production -- is an attractive alternative. However, researchers have little information on corn fiber's effects in dogs.

Promising fiber
In the new study, researchers studied digestion, food intake, and fecal characteristics in dogs fed either a special food containing corn fiber or a standard food containing beet fiber. Substituting corn fiber for beet fiber "does not dramatically impact nutrient digestibility, food intake, or fecal production and characteristics," the researchers say.

Corn fiber should therefore be considered a promising fiber alternative for use in dog food, they note. Previous studies suggest that corn fiber in animal food could have beneficial effects in reducing risks of obesity and diabetes.

The study "Chemical Composition, in Vitro Fermentation Characteristics, and in Vivo Digestibility Responses by Dogs to Select Corn Fibers" is scheduled for the March 26 issue of ACS' Journal of Agricultural and Food Chemistry.

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