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A Summary of Four Years Work in Ram Progeny and Performance Testing

Texas Agricultural Experiment Station

Abstract

A summary of four years work in progeny and performance testing of rams is reported. A total of 576 rams consisting mostly of Rambouillets with a smaller number of Corriedales, Columbias, Merinos and Suffolks have been full fed on a ration of oats and alfalfa and studied in detail. Data are presented to indicate that important and highly heritable differences exist between the performance of offspring of different sires. Other data are presented to show the phenotypic correlation existing between the various characteristics on which data were collected as possible aids in selection.

¹ The authors gratefully acknowledge the contribution of the following people: The late W. H. Dameron under whose leadership this work was originally started; Mr. Stanley P. Davis for conducting the detailed work on wool technology: Mr. O. L. Carpenter as a co-worker; Dr. Robert R. Shrode for suggestions in preparation of the manuscript; and cooperating sheep breeders.

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