Am. Soc. Anim. Prod.
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Am. Soc. Anim. Prod. 1928:37-41
© 1928 American Society of Animal Science
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Inheritance of Persistency of Lactation

W. L. Gaines

Illinois Agricultural Experiment Station

Abstract

The milk yield of dairy cows for the lactation period is generally recognized as a character of great economic importance. The lactation yield may be regarded as the result of the rate of milk secretion throughout the lactation period. If we plot the rate of yield the curve may be called the lactation curve, and the total yield is then represented by the area under the curve. The term persistency of lactation, as here used, refers to the slope of the lactation curve. Is the slope of the lactation curve a heritable character? If so, what is the mode of inheritance?






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Copyright © 1928 by the American Society of Animal Science.