Abstract

Genetic change in animal growth to improve efficiency of meat production continues to command widespread interest among animal scientists. The availability of genetic variation in rate, patterns, composition and biological efficiency of animal growth has been described amply by previous speakers in this Session. Our purpose will be to evaluate the potential effects of changes in components of growth on both biological and economic input/output efficiency of animal production systems, including the complete life-cycle and various subpopulations. Some interactions of growth changes with performance levels for other traits and with alternative management, marketing and relative price or value situations also will be discussed. Hopefully, this approach will provide some quantitative basis for the role of growth modification in livestock breeding objectives.

G. E Dickerson

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 5. Plenary sessions, , 252–267, 1982
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