The existence of breed x environment interactions in sheep could dictate that different breeds be chosen for specific physical and/or managerial environments. Mating system x environment interactions could mean that the existence or magnitude of heterosis was dependent upon environment. In this study, both genotype X environment and mating system X environment interactions for growth and carcass quality in sheep are examined. Environmental variables were years and systems of pastoral management in the same area. Genotypes were all possible straightbred and reciprocal crossbred combinations among three mutton breeds.

W. D Hohenboken, W. H Kennick, R. Bogart

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 3, Madrid, Spain, 1001–1005, 1974
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