SciELO - Scientific Electronic Library Online

 
vol.42 número5Estimation of genetic parameters for growth traits in Brangus cattleThe in vitro fermentation of maize stover as affected by faecal bacteria obtained from ungulates índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google

Compartir


South African Journal of Animal Science

versión On-line ISSN 2221-4062
versión impresa ISSN 0375-1589

Resumen

NESER, F.W.C.; VAN WYK, J.B.; FAIR, M.D.  y  LUBOUT, P.. Genetic evaluation of growth traits in beef cattle using random regression models. S. Afr. j. anim. sci. [online]. 2012, vol.42, n.5, pp.474-477. ISSN 2221-4062.

Direct- and maternal heritabilities were estimated for weight traits in Brangus cattle using random regression models. After editing, 54 924 records, from birth- (BW) to mature weight (MW) from 21 673 animals were selected for analysis. The data, which covered a period of 8 generations (1985 to 2010), were transformed to a log scale to accommodate the wide range of weights being studied (15 to 850 kg). Traits included in the analysis were birth- (BW), weaning- (WW), yearling- (YW), eighteen month- (FW) and three measurements of mature weight (MW). Linear polynomials with intercepts were fitted using random regression models. The direct heritability estimates were moderate and ranged from 0.13 to 0.25 while maternal heritability estimates were low ranging from 0.05 to 0.06.

Palabras clave : Heritability estimates; South African Brangus cattle.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons