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Skin Folds in Rambouillet Sheep

Texas Agricultural Experiment Station

Abstract

1. A flock of approximately 200 ewes was divided into two groups based on number of skin folds, bred within their respective groups and compared in production over a period of 6 years.

2. In this study the folded ewes produced approximately one-half pound more grease wool as mature ewes, but the smooth ewes had an advantage on all other characters studied. The smooth group produced significantly greater staple length, more weight and higher body score at weaning and were heavier as yearlings.

3. The performance of ram lambs on feed was compared, according to the number of skin folds, with the folded rams showing a slight advantage in gain and wool production, but producing shorter staple wool.

4. An attempt was made to reconcile these two apparently contrasting viewpoints.

5. In view of the many advantages of smooth sheep, along with their preference by the industry, breeders can no longer justify skin folds for the slight additional grease wool.