2009
DOI: 10.2527/jas.2007-0636
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Direct genetic, maternal genetic, and heterozygosity effects on weaning weight in a Colombian multibreed beef cattle population12

Abstract: The (co)variance components of BW at weaning (WW) were estimated for a Colombian multibreed beef cattle population. A single-trait animal model was used. The model included the fixed effect of contemporary group (sex, season, and year), and covariates including age of calf at weaning, age of cow, individual and maternal heterozygosity proportions, and breed percentage. Direct genetic, maternal genetic, permanent environmental, and residual effects were included as random effects. Direct, maternal, and total he… Show more

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Cited by 16 publications
(19 citation statements)
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“…The opposite result was found by Splan et al (2002) whose estimate of maternal heritability was slightly greater (0.19) than the estimate for direct heritability (0.14). The total heritability values (h 2 T ) were between 0.09 and 0.35 which are similar to the values obtained by Meyer (1994) and Vergara et al (2009). Sire **** **** **** **** **** **** **** Herd **** ** -1 ** **** NS **** Age of cows at calving **** **** **** **** **** **** **** Birth year **** **** **** **** **** **** **** Birth season **** **** **** **** **** **** **** Sex **** **** **** **** **** **** **** The direct-maternal genetic correlations (r dm ) were high (-0,52 to -0,88) and negative for all breeds.…”
Section: Resultssupporting
confidence: 87%
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“…The opposite result was found by Splan et al (2002) whose estimate of maternal heritability was slightly greater (0.19) than the estimate for direct heritability (0.14). The total heritability values (h 2 T ) were between 0.09 and 0.35 which are similar to the values obtained by Meyer (1994) and Vergara et al (2009). Sire **** **** **** **** **** **** **** Herd **** ** -1 ** **** NS **** Age of cows at calving **** **** **** **** **** **** **** Birth year **** **** **** **** **** **** **** Birth season **** **** **** **** **** **** **** Sex **** **** **** **** **** **** **** The direct-maternal genetic correlations (r dm ) were high (-0,52 to -0,88) and negative for all breeds.…”
Section: Resultssupporting
confidence: 87%
“…Several estimates of direct-maternal correlation reported by Mohuiddin (1993) were negative, although they ranged from -0,78 to 0.25. Also, similarly negative, but a somewhat lower correlations were reported by Splan et al (2002) (r dm = -0.18) and Vergara et al (2009), while Sullivan et al (1999 assumed a zero correlation.…”
Section: Resultsmentioning
confidence: 78%
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“…Vários estudos mostram a existência de antagonismo entre os efeitos genéticos aditivos direto e maternal (MAGNABOSCO et al, 2000;SPLAN et al, 2002;VERGARA et al, 2009), indicado pelas estimativas de correlações negativas. A existência de correlação genética negativa entre efeito aditivo direto e maternal (TAB.…”
Section: Resultsunclassified