1967
DOI: 10.2527/jas1967.264804x
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Milk Production, Composition and Calf Gains of Angus, Charolais and Hereford Cows

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Cited by 76 publications
(79 citation statements)
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“…When animals were weighted, their body condition score was evaluated (BCE; Lowman et al, 1973) Cow milk production was estimated on early weaning dates in 2005 and 2006 as the difference in calf weight before and after suckling (Melton et al, 1967). Calves were separated from their dams from 12:00 pm to 6:00 pm, when they were reunited to the dams and allowed to suckle, aiming at emptying the udder.…”
Section: Methodsmentioning
confidence: 99%
“…When animals were weighted, their body condition score was evaluated (BCE; Lowman et al, 1973) Cow milk production was estimated on early weaning dates in 2005 and 2006 as the difference in calf weight before and after suckling (Melton et al, 1967). Calves were separated from their dams from 12:00 pm to 6:00 pm, when they were reunited to the dams and allowed to suckle, aiming at emptying the udder.…”
Section: Methodsmentioning
confidence: 99%
“…Keller ( 1980) found no effect of calf sex, whereas Jeffrey et al (197lb) found that the heaviest producers had bull calves in CANADIAN JOURNAL OF ANIMAL SCIENCE the lst year of a study, but cows with heifer calves were the heaviest producers in the 2nd year. Melton et al (1967) showed that milk production was 53 kg greater for cows suckling bull calves than for those suckling heifer calves. Rutledge et al (1971) Gleddie and Berg (1968) and Keller (1980) stated that percentages of fat, protein, and SNF were uncorrelated with calf gain in their experiments.…”
Section: Experimental Herdmentioning
confidence: 99%
“…Vários estudos demonstraram a elevada correlação entre a produção de leite da vaca e o desempenho do bezerro (Melton et al, 1967;Totusek et al, 1973;Alencar et al, 1996;Restle et al, 2004), sendo a produção de leite influenciada pelos fatores ambiental e genético. Quanto ao fator ambiental, vacas sob melhores condições alimentares produzem mais leite e, conseqüentemente, bezerros mais pesados ao desmame (Neville Jr., 1962;Bond & Wiltbank, 1970;Restle et al, 2003).…”
Section: Introductionunclassified
“…Quanto ao fator ambiental, vacas sob melhores condições alimentares produzem mais leite e, conseqüentemente, bezerros mais pesados ao desmame (Neville Jr., 1962;Bond & Wiltbank, 1970;Restle et al, 2003). Entre os fatores genéticos, destacam-se a composição genética dos animais, expressa pelo grau de sangue ou grupo genético, e o tamanho da vaca, uma vez que vacas maiores dentro do mesmo rebanho ou entre raças apresentam maior produção de leite (Melton et al, 1967;Alencar et al, 1993;Cruz et al, 1997).…”
Section: Introductionunclassified
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