Usda-Dhia Factors for Standardizing 305-Day Lactation Records for Age and Month of Calving (Classic Reprint)

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Excerpt from Usda-Dhia Factors for Standardizing 305-Day Lactation Records for Age and Month of Calving The accepted standard length of the lactation record is 305 days. When a cow is milked longer than 305 days, her yield for the first 305 days is used as the lactation yield. Partial lactations (those terminated in less than 305 days because of environmental influences having no relation to the cow's genetic ability to complete normal length lactations) are considered legitimate measures of the cow's performance up to the time they were terminated and are projected to 305 days. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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.