How sheep of different genotypes produce in different environments is of major importance to livestock producers. An adapted sheep must have the ability to cope with environmental extremes of the locale. Numerous genetic x environmental studies have been designed to examine interactions (King and Young, 1955; Dunlop, 1963; Hohenboken et al., 1976.) However, these studies are limited to the effects of weather conditions which occurred during the course of the experiment. The objective of this study was to document how different genotypes (varying in mature size and potential milk production level) responded to an average year, a drought year, and how they recover from the drought, by using a simulation model.

Harvey D Blackburn, T. C Cartwright

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XI. Genetics of reproduction, lactation, growth, adaptation, disease, and parasite resistance., , 510–513, 1986
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