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Excerpt from The Correlation Between the Butter-Fat Percentage of One Lactation and Succeeding Lactations in Jersey Cattle Naturally the problem resolves itself into a study of the relative strength and precision of action of the inherited com plex possessed by the cow working in conjunction with and in opposition to the environmental changes. If heredity plays a large part in the production of a cow the position of the cow in the frequency curves discussed in the earlier part of the paper will remain approximately the same from lactation to lactation; if on the other hand heredity of butter-fat production istweak in comparison with the influence of the shifts in environment, the position in our frequency curves of the cow will change materially from lactation to lactation. The preliminary steps in the analysis of this problem included a study of the mean butter fat percentage for each age and the standard deviations of this for the different ages. 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.

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