Abstract

In this review we give motives for including reproduction traits in the breeding work and describe some biological, structural and methodological difficulties in selection for improved reproduction. Current status in breeding programs for cattle and pigs is presented. Genetic studies on oestrus symptoms, days open, conception rate, gestation length and survival and growth of the young are reviewed. The importance of recording such traits is emphasized.

L. Rydhmer, B. Berglund

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 11.01, 2006
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