ESTIMATIVAS DE PARÂMETROS GENÉTICOS PARA CARACTERÍSTICAS DE CRESCIMENTO DE CORDEIROS MESTIÇOS SUFFOLK
The aim of this study was to estimate the heritability and genetic correlation coefficients between weights at birth (BW) and weaning (WW) in Suffolk crossbred lambs, which belonged to an experimental herd. Thus, four different animal models were fitted, including the direct additive genetic ef...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Goiás
2014-12-01
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| Series: | Ciência Animal Brasileira |
| Subjects: | |
| Online Access: | http://www.revistas.ufg.br/index.php/vet/article/view/25355/17651 |
| _version_ | 1818531828749828096 |
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| author | Priscilla Regina Tamioso Laila Talarico Dias Rodrigo de Almeida Teixeira Cláudio José Araújo da Silva |
| author_facet | Priscilla Regina Tamioso Laila Talarico Dias Rodrigo de Almeida Teixeira Cláudio José Araújo da Silva |
| author_sort | Priscilla Regina Tamioso |
| collection | DOAJ |
| description | The aim of this study was to estimate the heritability and
genetic correlation coefficients between weights at birth
(BW) and weaning (WW) in Suffolk crossbred lambs,
which belonged to an experimental herd. Thus, four
different animal models were fitted, including the direct
additive genetic effect (Model 1), the direct additive
genetic and maternal permanent environmental effects
(Model 2), the direct additive, permanent environmental
and maternal genetic effects (cova,m=0) (Model 3), and in
Model 4, in addition to those in Model 3, cova,m≠0 was
considered. After comparing the models through the
likelihood ratio test (LRT), Model 3 was chosen as the
most appropriate, being the heritability estimates low in
magnitude for BW and WW, equal to 0.08±0.009 and
0.24±0.17, respectively, which indicates low possibility of
response to direct selection. Likewise, the correlation
coefficient between these traits, 0.43±0.39, implies low
possibility of correlated response. The inclusion of
maternal effects is necessary for the accurate estimation of
genetic parameters for the evaluated traits. |
| first_indexed | 2024-12-11T17:37:33Z |
| format | Article |
| id | doaj.art-5e54b026c1ac4dbb8863777061e394c9 |
| institution | Directory Open Access Journal |
| issn | 1518-2797 1809-6891 |
| language | English |
| last_indexed | 2024-12-11T17:37:33Z |
| publishDate | 2014-12-01 |
| publisher | Universidade Federal de Goiás |
| record_format | Article |
| series | Ciência Animal Brasileira |
| spelling | doaj.art-5e54b026c1ac4dbb8863777061e394c92022-12-22T00:56:38ZengUniversidade Federal de GoiásCiência Animal Brasileira1518-27971809-68912014-12-0115441441910.1590/1089-6891v15i425355ESTIMATIVAS DE PARÂMETROS GENÉTICOS PARA CARACTERÍSTICAS DE CRESCIMENTO DE CORDEIROS MESTIÇOS SUFFOLKPriscilla Regina Tamioso0Laila Talarico Dias1Rodrigo de Almeida Teixeira2Cláudio José Araújo da Silva3Pós Graduanda da Universidade Federal do Paraná, Curitiba, PR, Brasil. Professores Doutores da Universidade Federal do Paraná, Curitiba, PR, Brasil.Professores Doutores da Universidade Federal do Paraná, Curitiba, PR, Brasil.Pós Doutorando da Universidade Federal do Paraná, Curitiba, PR, Brasil.The aim of this study was to estimate the heritability and genetic correlation coefficients between weights at birth (BW) and weaning (WW) in Suffolk crossbred lambs, which belonged to an experimental herd. Thus, four different animal models were fitted, including the direct additive genetic effect (Model 1), the direct additive genetic and maternal permanent environmental effects (Model 2), the direct additive, permanent environmental and maternal genetic effects (cova,m=0) (Model 3), and in Model 4, in addition to those in Model 3, cova,m≠0 was considered. After comparing the models through the likelihood ratio test (LRT), Model 3 was chosen as the most appropriate, being the heritability estimates low in magnitude for BW and WW, equal to 0.08±0.009 and 0.24±0.17, respectively, which indicates low possibility of response to direct selection. Likewise, the correlation coefficient between these traits, 0.43±0.39, implies low possibility of correlated response. The inclusion of maternal effects is necessary for the accurate estimation of genetic parameters for the evaluated traits.http://www.revistas.ufg.br/index.php/vet/article/view/25355/17651body weightgenetic correlationheritabilitymodel comparison |
| spellingShingle | Priscilla Regina Tamioso Laila Talarico Dias Rodrigo de Almeida Teixeira Cláudio José Araújo da Silva ESTIMATIVAS DE PARÂMETROS GENÉTICOS PARA CARACTERÍSTICAS DE CRESCIMENTO DE CORDEIROS MESTIÇOS SUFFOLK Ciência Animal Brasileira body weight genetic correlation heritability model comparison |
| title | ESTIMATIVAS DE PARÂMETROS GENÉTICOS PARA CARACTERÍSTICAS DE CRESCIMENTO DE CORDEIROS MESTIÇOS SUFFOLK |
| title_full | ESTIMATIVAS DE PARÂMETROS GENÉTICOS PARA CARACTERÍSTICAS DE CRESCIMENTO DE CORDEIROS MESTIÇOS SUFFOLK |
| title_fullStr | ESTIMATIVAS DE PARÂMETROS GENÉTICOS PARA CARACTERÍSTICAS DE CRESCIMENTO DE CORDEIROS MESTIÇOS SUFFOLK |
| title_full_unstemmed | ESTIMATIVAS DE PARÂMETROS GENÉTICOS PARA CARACTERÍSTICAS DE CRESCIMENTO DE CORDEIROS MESTIÇOS SUFFOLK |
| title_short | ESTIMATIVAS DE PARÂMETROS GENÉTICOS PARA CARACTERÍSTICAS DE CRESCIMENTO DE CORDEIROS MESTIÇOS SUFFOLK |
| title_sort | estimativas de parametros geneticos para caracteristicas de crescimento de cordeiros mesticos suffolk |
| topic | body weight genetic correlation heritability model comparison |
| url | http://www.revistas.ufg.br/index.php/vet/article/view/25355/17651 |
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