In most countries efficient production of lean meat is likely to remain the most important selection objective for meat sheep, and an important component of a wider objective in multi-purpose breeds. The precise definition of this broacf goal varies quite widely between and within countries. However, there is now good experimental evidence that selection on wei~t and in vivo measurements of composition is effective in improving several of these goals. Increasingly this technology is being transferred into industry breeding schemes, and initial results from these are encouraging. Further improvements are expected from aevelopments in the design of breeding schemes, more comprehensive breeding goals and criteria, use of imf)roved methods for in vivo assessment and genetic evaluation and the wider use of reproductive (and in the longer term molecular) technologies.

G. Simm

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 18. Genetics and Breeding of Sheep and Goats; Breeding objectives and Breeding strategies; Genetic Parameters, Breeding Values, , 3–10, 1994
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