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Performance in Some of the Leading Guernsey Sires

Maryland Agricultural College

Abstract

The continuous improvement of the herds of livestock in the country depends upon the elimination of the unfit and the selection for mating of those individuals which possess in the highest degree the desirable character sought and which are still further endowed with the power to transmit their qualities to their offspring.

In order that one may obtain the greatest success in breeding dairy cattle, it is necessary that he should have some definite plan of breeding, some definite method by means of which males and females, especially the former, may be selected. Some means should be provided whereby the leading productive strains may be located and their prepotency, so far as concerns production capacity, indicated by some measurable quantity. It was with the idea of studying the transmitting power of some of the leading Guernsey Sires that this work was undertaken. It is intended to continue this research st) as to include a similar study of the transmitting power of these bulls through their sons' daughters. This paper is therefore presented not as a coucluded work but as a report of work still in progress.