“STREAMLINED” PIGS*

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Abstract
22 legless pigs were born in 1938 among 27 litters of high-grade Poland-China swine on an Iowa farm. The pigs were born alive and, except for the legless condition; appeared as healthy and vigorous as their normal litter mates. They lived for 2-3 days and seemingly died from starvation. None of the limb bones were present in the defective pigs and the scapulae and pelvic bones were not completely formed. The nerves leading to the limbs were present and apparently ended because of the absence of the legs into which to grow. Cleft palate and atresia ani accompanied the defect in some cases. The defect appears to be inherited as a simple Mendelian recessive.

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