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Ear Measurements in Relation to Pelt Thickness and Fur Characters of Karakul Lambs

United States Department of Agriculture¹

Abstract

The ear skin thickness of 166 and the ear length of 158 purebred and crossbred Karakul lambs were measured to determine the relationship of ear measurements to pelt and fur characters. Methods of taking these ear measurements are illustrated.

Ear skin thickness of newly born lambs ranged from 0.93 to 1.87 mm.

There was a significant relationship between ear skin thickness of lambs and the leather thickness at the shoulder and middle back of their dressed pelts.

Ear skin thickness and birth weight of lamb (size of pelt) showed a highly significant relationship. There was a definite tendency for small lambs at birth to have thinner ear skin than large lambs, and pelts of small lambs were thinner than those from large ones.

Birth weight of lamb (size of pelt) and size of curl were also highly significant in relationship, as shown by the tendency for small pelts to have a fur pattern with small curls.

¹ The cooperators participating in the project upon which this report is based are: D. A. Spencer, R. G. Schott, and C. G. Potts of the Bureau of Animal Industry, U. S. Department of Agriculture, and F. G. Ashbrook, C. E. Kellogg, and Thora M. Plitt Hardy of the Fish and Wildlife Service, U. S. Department of the Interior,