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Genetic and non-genetic factors affecting lamb growth and carcass quality.
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1999-05-01
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Hanrahan, J.P., Genetic and non-genetic factors affecting lamb growth and carcass quality, End of Project Reports, Teagasc, 1999.
Abstract
The work undertaken under this project concerned the effects of genetic and
non-genetic factors on lamb growth, both pre and post-weaning, and carcass
traits. The principal objective of the genetic studies was to estimate the
performance effects of selecting terminal sires on the basis of the lean meat
index (LMI) which is produced for pedigree lambs in flocks that participate
in the national Breed Improvement Programme operated by the Department
of Agriculture and Food. The merits of the Beltex breed, recently
introduced to this country, were also evaluated on comparisons with Texel
and Suffolk sires. Estimates of within-breed genetic variation for growth
and carcass traits were obtained.