Data/hora: 11/06/2024 10:12:55

Provedor de dados: | 74
País: | Brazil
Título: | Maternal effects on the genetic evaluation of Tabapuã beef cattle
Autores: | Campêlo,José Elivalto Guimarães; Lopes,Paulo Sávio; Torres,Robledo de Almeida; Silva,Luiz Otávio Campos da; Euclydes,Ricardo Frederico; Araújo,Cláudio Vieira de; Pereira,Carmen Silva.
Data: | 2004-01-01
Ano: | 2004
Palavras-chave: | Additive direct effects; Beef cattle; Genetic parameters; Growth; Maternal effects.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000400009
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572004000400009
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.27 n.4 2004
Fonte: | info:eu-repo/semantics/openAccess