Genetic analysis of days to calving in Nelore beef cattle
A Nelore population data were analyzed to estimate genetic parameters for days to calving (DC) and verify the possibility of using it as a selection criterion. There were 49 698 calving observations from 36 196 females. Data were analyzed using a single-trait animal model. The fixed effects were contemporary groups, calf sex and age of dam at joining as a covariable. The contemporary groups were composed of farm, year, season and handling group at joining and mating type (a mating group with multiple sires, a mating group with one sire or artificial insemination). The inclusion of permanent environmental effects of animals did not increase the likelihood function significantly. Heritability estimate was 0.090 ± 0.006, indicating that DC is strongly influenced by the environment.
| Autores principales: | , , |
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| Formato: | Digital revista |
| Idioma: | spa |
| Publicado: |
Asociacion Latinoamericana de Produccion Animal
2005
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| Acceso en línea: | https://ojs.alpa.uy/index.php/ojs_files/article/view/46 |
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