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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 Cattle (Classic Reprint) - Softcover
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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 Cattle
During 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 fluctuating 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.
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Studies in Milk Secretion, Vol. 17 (Classic Reprint)
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Paperback. Zustand: New. Print on Demand. This book is a study of the relationship between milk yield and butterfat percentages in Holstein-Friesian cattle as determined by testing cows over a period of seven and three hundred sixty-five days. The author examines whether the seven-day test results can be used to accurately predict longer-term performance. The author provides data that challenges the notion that a seven-day butterfat percentage will inevitably be higher than a 365-day percentage, revealing the nuances of the relationship between these metrics. It also questions whether the seven-day test effectively differentiates between cows' abilities, or whether factors such as feeding and management influence these results. Ultimately, the research in this book contributes to the larger discussion of the accuracy and significance of short-term testing as a predictor of long-term milk production and butterfat percentages in dairy cattle. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9780365552895_0
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