Genetic parameters for body weight ratio, fertility and growth traits in Canchim breed females
The objective of this study was to estimate the heritability of age at first calving (AFC), body condition score at first calving (BCF), body condition score at calving (BCC), weaning weight (WW), yearling weight (W12), weaning weight of calf/weight of cow at calving (RCC) and weaning weight of firs...
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| Language: | English |
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Instituto de Zootecnia
2013-03-01
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| Series: | Boletim de Indústria Animal |
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| Online Access: | http://revistas.bvs-vet.org.br/bia/article/view/11874 |
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| author | Silvio de Paula Mello Maurício Mello de Alencar Tiago Luciano Passafaro Fabio Luiz Buranelo Toral |
| author_facet | Silvio de Paula Mello Maurício Mello de Alencar Tiago Luciano Passafaro Fabio Luiz Buranelo Toral |
| author_sort | Silvio de Paula Mello |
| collection | DOAJ |
| description | The objective of this study was to estimate the heritability of age at first calving (AFC), body condition score at first calving (BCF), body condition score at calving (BCC), weaning weight (WW), yearling weight (W12), weaning weight of calf/weight of cow at calving (RCC) and weaning weight of first calf/weight of cow at first calving (RCCF) ratios, and genetic correlations of AFC, BCF, WW and W12 with RCCF, in a Canchim beef cattle herd. The variance and covariance components were obtained by bayesian inference with single and two-trait analyses. The statistical models included the additive direct and maternal, the permanent environmental and the residual random effects, and the fixed effects of year and month of birth or of calving, age of cow at calving and sex of calf, depending on the trait. The posterior means of heritability, obtained by single-trait analyses, were 0.12 (AFC), 0.36 (BCF), 0.18 (BCC), 0.50 (WW), 0.46 (W12), 0.16 (RCC) and 0.40 (RCCF) indicating that these traits have enough genetic variability to show response to mass selection with the exception of AFC. The genetic correlations of AFC (-0.61), BCF (-0.36), WW (-0.20) and W12 (-0.05) with RCCF suggest that selection to reduce age and body condition score at first calving should improve the productivity trait of females at first calving, while selection for heavier females at young ages would not promote any change in the productivity of dams. |
| first_indexed | 2024-12-12T18:39:35Z |
| format | Article |
| id | doaj.art-e37c409f9861440995b60876a0503949 |
| institution | Directory Open Access Journal |
| issn | 1981-4100 |
| language | English |
| last_indexed | 2024-12-12T18:39:35Z |
| publishDate | 2013-03-01 |
| publisher | Instituto de Zootecnia |
| record_format | Article |
| series | Boletim de Indústria Animal |
| spelling | doaj.art-e37c409f9861440995b60876a05039492022-12-22T00:15:42ZengInstituto de ZootecniaBoletim de Indústria Animal1981-41002013-03-0170323524110.17523/bia.v70n3p23511047Genetic parameters for body weight ratio, fertility and growth traits in Canchim breed femalesSilvio de Paula Mello0Maurício Mello de Alencar1Tiago Luciano Passafaro2Fabio Luiz Buranelo Toral3Faculdade de Ituverava, Ituverava, SPEmpresa Brasileira de Pesquisa Agropecuária, Pecuária Sudeste, São Carlos, SPUniversidade Federal de Minas Gerais, Escola de Veterinária, Belo Horizonte, MGUniversidade Federal de Minas Gerais, Escola de Veterinária, Belo Horizonte, MGThe objective of this study was to estimate the heritability of age at first calving (AFC), body condition score at first calving (BCF), body condition score at calving (BCC), weaning weight (WW), yearling weight (W12), weaning weight of calf/weight of cow at calving (RCC) and weaning weight of first calf/weight of cow at first calving (RCCF) ratios, and genetic correlations of AFC, BCF, WW and W12 with RCCF, in a Canchim beef cattle herd. The variance and covariance components were obtained by bayesian inference with single and two-trait analyses. The statistical models included the additive direct and maternal, the permanent environmental and the residual random effects, and the fixed effects of year and month of birth or of calving, age of cow at calving and sex of calf, depending on the trait. The posterior means of heritability, obtained by single-trait analyses, were 0.12 (AFC), 0.36 (BCF), 0.18 (BCC), 0.50 (WW), 0.46 (W12), 0.16 (RCC) and 0.40 (RCCF) indicating that these traits have enough genetic variability to show response to mass selection with the exception of AFC. The genetic correlations of AFC (-0.61), BCF (-0.36), WW (-0.20) and W12 (-0.05) with RCCF suggest that selection to reduce age and body condition score at first calving should improve the productivity trait of females at first calving, while selection for heavier females at young ages would not promote any change in the productivity of dams.http://revistas.bvs-vet.org.br/bia/article/view/11874bovinos de cortecorrelações genéticasherdabilidadepesosprodutividade |
| spellingShingle | Silvio de Paula Mello Maurício Mello de Alencar Tiago Luciano Passafaro Fabio Luiz Buranelo Toral Genetic parameters for body weight ratio, fertility and growth traits in Canchim breed females Boletim de Indústria Animal bovinos de corte correlações genéticas herdabilidade pesos produtividade |
| title | Genetic parameters for body weight ratio, fertility and growth traits in Canchim breed females |
| title_full | Genetic parameters for body weight ratio, fertility and growth traits in Canchim breed females |
| title_fullStr | Genetic parameters for body weight ratio, fertility and growth traits in Canchim breed females |
| title_full_unstemmed | Genetic parameters for body weight ratio, fertility and growth traits in Canchim breed females |
| title_short | Genetic parameters for body weight ratio, fertility and growth traits in Canchim breed females |
| title_sort | genetic parameters for body weight ratio fertility and growth traits in canchim breed females |
| topic | bovinos de corte correlações genéticas herdabilidade pesos produtividade |
| url | http://revistas.bvs-vet.org.br/bia/article/view/11874 |
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