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Article: REVIEW: Reproductive Traits and Their Heritabilities in Beef Cattle
- Article from:
- Professional Animal Scientist
- Article date:
- October 1, 2009
- Author:
CopyrightCopyright American Registry of Professional Animal Scientists Oct 2009. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
Fertility is a complex trait in beef production systems and genetic evaluation procedures, which is partly due to the numerous measures used to assess reproduction. Beyond beef cattle, fertility measures vary according to animal species, and even within beef cattle, they vary by b
reed, location, sex, and class. Fertility is of significant economic importance to beef cattle producers, and therefore should be included in their breeding objective. However, traits considered indicative of fertility are in general of low heritability, are expressed late in the life of an animal, or both. Complicating genetic analyses is the binary nature of many of these traits because of truncation of ...