Divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traits
<p>Abstract</p> <p>The effects of selection for growth rate on weights and qualitative carcass and muscle traits were assessed by comparing two lines selected for live body weight at 63 days of age and a cryopreserved control population raised contemporaneously with generation 5 se...
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doaj-9c7b59f7c7ad4b96a754cdc0731a13692020-11-25T00:17:35ZdeuBMCGenetics Selection Evolution0999-193X1297-96862005-01-0137110512210.1186/1297-9686-37-1-105Divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traitsCombes SylvieGondret FlorenceLarzul Catherinede Rochambeau Hubert<p>Abstract</p> <p>The effects of selection for growth rate on weights and qualitative carcass and muscle traits were assessed by comparing two lines selected for live body weight at 63 days of age and a cryopreserved control population raised contemporaneously with generation 5 selected rabbits. The animals were divergently selected for five generations for either a high (H line) or a low (L line) body weight, based on their BLUP breeding value. Heritability (<it>h</it><sup>2</sup>) was 0.22 for 63-d body weight (<it>N </it>= 4754). Growth performance and quantitative carcass traits in the C group were intermediate between the H and L lines (<it>N </it>= 390). Perirenal fat proportion (<it>h</it><sup>2 </sup>= 0.64) and dressing out percentage (<it>h</it><sup>2 </sup>= 0.55) ranked in the order L < H = C (from high to low). The weight and cross-sectional area of the <it>Semitendinosus </it>muscle, and the mean diameter of the constitutive myofibres were reduced in the L line only (<it>N </it>= 140). In the <it>Longissimus </it>muscle (<it>N </it>= 180), the ultimate pH (<it>h</it><sup>2 </sup>= 0.16) and the maximum shear force reached in the Warner-Braztler test (<it>h</it><sup>2 </sup>= 0.57) were slightly modified by selection.</p> http://www.gsejournal.org/content/37/1/105rabbitgrowthselectiongenetic parametersmeat quality |
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DOAJ |
language |
deu |
format |
Article |
sources |
DOAJ |
author |
Combes Sylvie Gondret Florence Larzul Catherine de Rochambeau Hubert |
spellingShingle |
Combes Sylvie Gondret Florence Larzul Catherine de Rochambeau Hubert Divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traits Genetics Selection Evolution rabbit growth selection genetic parameters meat quality |
author_facet |
Combes Sylvie Gondret Florence Larzul Catherine de Rochambeau Hubert |
author_sort |
Combes Sylvie |
title |
Divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traits |
title_short |
Divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traits |
title_full |
Divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traits |
title_fullStr |
Divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traits |
title_full_unstemmed |
Divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traits |
title_sort |
divergent selection on 63-day body weight in the rabbit: response on growth, carcass and muscle traits |
publisher |
BMC |
series |
Genetics Selection Evolution |
issn |
0999-193X 1297-9686 |
publishDate |
2005-01-01 |
description |
<p>Abstract</p> <p>The effects of selection for growth rate on weights and qualitative carcass and muscle traits were assessed by comparing two lines selected for live body weight at 63 days of age and a cryopreserved control population raised contemporaneously with generation 5 selected rabbits. The animals were divergently selected for five generations for either a high (H line) or a low (L line) body weight, based on their BLUP breeding value. Heritability (<it>h</it><sup>2</sup>) was 0.22 for 63-d body weight (<it>N </it>= 4754). Growth performance and quantitative carcass traits in the C group were intermediate between the H and L lines (<it>N </it>= 390). Perirenal fat proportion (<it>h</it><sup>2 </sup>= 0.64) and dressing out percentage (<it>h</it><sup>2 </sup>= 0.55) ranked in the order L < H = C (from high to low). The weight and cross-sectional area of the <it>Semitendinosus </it>muscle, and the mean diameter of the constitutive myofibres were reduced in the L line only (<it>N </it>= 140). In the <it>Longissimus </it>muscle (<it>N </it>= 180), the ultimate pH (<it>h</it><sup>2 </sup>= 0.16) and the maximum shear force reached in the Warner-Braztler test (<it>h</it><sup>2 </sup>= 0.57) were slightly modified by selection.</p> |
topic |
rabbit growth selection genetic parameters meat quality |
url |
http://www.gsejournal.org/content/37/1/105 |
work_keys_str_mv |
AT combessylvie divergentselectionon63daybodyweightintherabbitresponseongrowthcarcassandmuscletraits AT gondretflorence divergentselectionon63daybodyweightintherabbitresponseongrowthcarcassandmuscletraits AT larzulcatherine divergentselectionon63daybodyweightintherabbitresponseongrowthcarcassandmuscletraits AT derochambeauhubert divergentselectionon63daybodyweightintherabbitresponseongrowthcarcassandmuscletraits |
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