Abstract

Examples of breeding objectives for sheep industries with well developed breeding programs such as in Australia and New Zealand are reviewed briefly. For industries lacking adequate information on genetic and economic parameters to quantify objectives precisely, some general guidelines for choice of objectives are outlined, and it is suggested that considerable genetic progress can be made in such industries by use of sound objectives in choice of breeds, breed combinations or base populations for multiplication. Objectives which it is suggested merit increased attention include: (1) defining optimum litter size and mature size; (2) improving lamb viability; (3) improving longevity and disease resistance; (4) reducing labor requirements (improving easy care traits); (5) improving feed conversion; (6) reducing seasonality of breeding; and (7) reducing variability in litter size. Breeding objectives for goats are discussed briefly.
 

G. E Bradford, H. H Meyer

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume IX. Breeding programs for dairy and beef cattle, water buffalo, sheep, and goats., , 479–492, 1986
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