Maternal effects on the genetic evaluation of Tabapuã beef cattle
Genet. mol. biol
;
27(4): 517-521, Dec. 2004. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-391223
ABSTRACT
The aim of this investigation was to study the influence of maternal effects on the genetic evaluation of sire production in Tabapuã beef cattle. Single and multiple trait analyses were done with adjusted animal weights at 120, 240 and 420 days of age. Antagonism was observed between additive direct and maternal genetic effects, with the maternal effect being higher until weaning. The inclusion of maternal effects in the models removed part of the additive variance only in single trait analyses and resulted in smaller means and standard deviations for the sire breeding values. The use of maternal effect associated with single or multiple traits may affect sire ranking. The contradictory results of the single and multiple trait analyses for additive direct and maternal effects indicate that caution is needed when considering recommendations about the importance of maternal effects in Tabapuã beef cattle.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Bovinos
/
Modelos Genéticos
Tipo de estudio:
Factores de riesgo
Límite:
Animales
Idioma:
Inglés
Revista:
Genet. mol. biol
Asunto de la revista:
Genética
Año:
2004
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Embrapa - Gado de Corte/BR
/
Universidade Federal de Viçosa/BR
/
Universidade Federal do Piauí/BR
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