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Transmitting Ability of Dairy Sires

University of Illinois

Abstract

The milk yield of any given cow is the product of two contributing factors Heredity and Environment. Environment is directly responsible for the expression of production, but the potential ability to produce a given yield is unquestionably due to the influence of heredity. If Mendel's laws of heredity had been accepted and used at the time of their discovery as they were after their rediscovery half a century later, it might not be necessary to admit at the outset, as we are now obliged to do, that our knowledge of the influence of environment as affecting production has far outstripped our understanding of the influence of heredity.

Inheritance Studies—Methods In Use

Aside from some three or four hybridization experiments the majority of the inheritance studies which have been made on yield of milk have centered around the influence of the sire and the effect which he has had on the production of his daughters.