Studies in Milk Secretion, Vol. 17

Angebote / Angebote:

Excerpt from Studies in Milk Secretion, Vol. 17: Relation Between Milk Yields and Butter-Fat Percentages of the 7-Day and 365-Day Tests of Holstein-Friesian Advanced Registry CattleDuring the course Of their development two of our leading dairy breeds, the Jersey and. The holstein-friesian, have made extensive use Of the 7-day test. The Jersey breed has now prac tically discontinued the use Of the 7-day record advocating the 365-day record as the only measure Of the cow's worth as a milk producer. The discussion of the merits of the Short time test and the long time test has recently entered a highly controversial stage even among its chief adherents, the holstein-friesian breeders. Few, if any, Of the supporters Of either camp have actively asserted that the long time test was not desirable. The contest has centered on the validity. Of the 7-day test as a meas ure Of the cow's subsequent performance.This question is intricate. It is really one phase of the larger question of the normal ¿uctuating variability of milk yield. In fact, it is from this angle that the authors were led into this problem, for whatever Significance may be attached to this variability, a fairly comprehensive knowledge of its magni tude forms a necessary prelude to the further use Of such data for genetic studies.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.