Excerpt from Genetic Research With Experimental Dairy Cattle at the Beltsville Agricultural Research Center Although crossbreeding was an integral part of the project, estimating the degree of heterosis in various aspects of performance was not an objective. Hence, only a base herd of Holstein females constituted the foundation cows of the project. The herd was randomly divided into three units - one for out cross matings, one for a mild inbreeding program, and one for crossbreeding. The mild inbreeding phase was carried ...
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Excerpt from Genetic Research With Experimental Dairy Cattle at the Beltsville Agricultural Research Center Although crossbreeding was an integral part of the project, estimating the degree of heterosis in various aspects of performance was not an objective. Hence, only a base herd of Holstein females constituted the foundation cows of the project. The herd was randomly divided into three units - one for out cross matings, one for a mild inbreeding program, and one for crossbreeding. The mild inbreeding phase was carried out by making pedigree selection of young bulls born within the mild inbreeding line itself and loaning them to AI units, State and Federal institutional herds, and private dairymen. Progeny test information thus obtained was the basis for selecting the bulls that were used to propagate the mild inbreeding line. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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