High producing crossbreds in the tropics often fall short of expectation because of the lack of a simultaneous upgrading o f the level o f other inputs. Maximising animal production should be looked upon as a total integrated package of genetics, nutrition and management aimed to modify and meet physiological needs and processes to counteract the influences of stress. Current knowledge in this area is a limiting factor. A second aspect is to further integrate biological efficiency with economic efficiency to attain maximum productivity with available resources. An approach for such an integration is presented using modelling.

S. Sivarajasingam

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XIV. Dairy cattle genetics and breeding, adaptation and conservation., , 360–364, 1990
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