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Provedor de dados:  Genet. Mol. Biol.
País:  Brazil
Título:  QTL affecting body weight in a candidate region of cattle chromosome 5
Autores:  Machado,Mariana B.B.
Alencar,Maurício M.
Pereira,Andréa P.
Oliveira,Henrique N.
Coutinho,Luis L.
Regitano,Luciana C.A.
Data:  2003-01-01
Ano:  2003
Palavras-chave:  QTL
Growth traits
Resumo:  The objective of this work was to identify QTLs for liveweight in a candidate region of bovine chromosome 5. Half-sib families from two lines, one traditional and the other new, of Canchim beef cattle (5/8 Charolais + 3/8 Zebu) were genotyped for four microsatellite markers, including the microsatellite in the IGF-1 (insulin-like growth factor-1) promoter region. Significant differences in allele distribution between the two lines were found for three markers. Interval mapping analyses in this region indicated the presence of a QTL controlling birth weight (p < 0.05) and of a QTL influencing breeding value for yearling weight (p < 0.01) in the newer line of the breed. The previously identified interaction between the IGF-1 genotype and genetic group strengthens the hypothesis of a linked QTL rather than an IGF-1 effect on growth traits in the Canchim cattle.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Sociedade Brasileira de Genética
Relação:  10.1590/S1415-47572003000300008
Formato:  text/html
Fonte:  Genetics and Molecular Biology v.26 n.3 2003
Direitos:  info:eu-repo/semantics/openAccess

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