Interacción genotipo-ambiente en ganado Holstein colombiano
ABSTRACT: The existence of Genotype-Environment Interactions among four regions of Colombia was investigated. The information was obtained from records of Holstein cattle in Cundinamarca (C), Valle del Cauca(V), Antioquia (A) and Nariño (N). A mixed models multivariate analysis methodology, applied...
- Autores:
-
Cerón Muñoz, Mario Fernando
Tonhati, Humberto
Costa, Claudio Napolis
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2001
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- spa
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/31520
- Acceso en línea:
- https://hdl.handle.net/10495/31520
- Palabra clave:
- Leche - producción
Milk production
Ganado holstein-friesian
Holstein-friesian cattle
Interacción genotipo-medio ambiente
Genotype-environment interaction
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-sa/2.5/co/
Summary: | ABSTRACT: The existence of Genotype-Environment Interactions among four regions of Colombia was investigated. The information was obtained from records of Holstein cattle in Cundinamarca (C), Valle del Cauca(V), Antioquia (A) and Nariño (N). A mixed models multivariate analysis methodology, applied to an animal model for repeated measures was used. Variance components were estimated by Derivative Free Restricted Maximum Likelihood algorithm (DFREML). Contemporary group (Herd-year) and genetic group of the sires (origin-year of birth) were fixed effects, and the genetic additive, permanent environment and temporary environment were included as random effects. Production records (n = 69464) of 25 608 daughters of 594 sires were used. Genetic correlation coefficients of milk production between regions were 0.70, 0.83, 0.73, 0.95, 0.97 and 0.99 for C-V, C-A, C-N, V-A, V-N and A-N, respectively. Different genetic, permanent environment and residual variances among areas were observed, but heritabilities and repetibilities were similar. Genotype and Environment Interaction exists, mainly between Cundinamarca and the other three regions. |
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