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2045: Bone Mineral Densitometry in Dogs: Effect of Body Size and Exercise on Bone Size and Bone Density

Grant Status: Closed

Grant Amount: $12,350

Dr. Diana Rosenstein, DVM, Michigan State University

July 17, 2000 - January 15, 2002

Sponsor(s): Italian Greyhound Club of America, Saluki Club of America, Inc., Saluki Health Research, Inc.

Breed(s): -All Dogs

Abstract

This study examined 61 healthy dogs from six breeds of various body sizes (Italian Greyhound, Saluki, Borzoi, Cardigan Welsh Corgi, German Wirehaired Pointer and Rhodesian Ridgeback) to look for differences in bone size and density. Using X-rays and computed tomography (CT), the researchers looked at the long (limb) bones and the spines. They found that small or fine-boned dogs do not have weaker bones than larger dogs. In fact, the small and fine-boned dogs tended to have higher bone-mineral density and a larger ratio of the bone�s dense, outer layer to the hollow core. There was little evidence that exercise or age is associated with differences in dogs� bones. Diet analysis was inconclusive due to wide variations in feed given to the participants. This study also provides a foundation for future controlled studies on the effect of diet and exercise on bone development.