Abstract
Thoroughbreds are bred solely with a view to racing, and their performances are well documented. Racehorses are good subjects, therefore, for studying the effects of perinatal disorders on physical development and achievement. Thoroughbreds become fully grown at about 3 years . . . but in flat racing they are raced first at 2 years and the majority have completed their racing careers by the end of their third year, although a few continue after this age. At 2 years some are still not fully developed and their potential ability is often not evident until the third year.
It has long been recognized by breeders and trainers that twin foals rarely develop into successful racehorses but there is little information on the outlook for single foals of low birth weight.
- Copyright © 1978 by the American Academy of Pediatrics
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