QTL affecting body weight in a candidate region of cattle chromosome 5
Genet. mol. biol
; 26(3): 259-265, 2003. ilus, tab, graf
Article
em En
| LILACS
| ID: lil-346314
Biblioteca responsável:
BR26.1
ABSTRACT
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
Texto completo:
1
Índice:
LILACS
Assunto principal:
Polimorfismo Genético
/
Bovinos
/
Mapeamento Cromossômico
/
Característica Quantitativa Herdável
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Genet. mol. biol
Assunto da revista:
GENETICA
Ano de publicação:
2003
Tipo de documento:
Article