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dc.contributor.authorRODRIGUES, W. B.pt_BR
dc.contributor.authorWECHSLER, F. S.pt_BR
dc.contributor.authorNOGUEIRA, E.pt_BR
dc.date.accessioned2015-11-27T11:11:11Zpt_BR
dc.date.available2015-11-27T11:11:11Zpt_BR
dc.date.created2015-11-27pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationReproduction in Domestic Animals, v. 50, n. 3, p. 431-436, 2015.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1029804pt_BR
dc.descriptionThe objective of the present research was to evaluate the effect of a calf?s genetic group on the productive and reproductive efficiency of its Nellore dam. Fixed-time artificial insemination was applied to 800 cows using semen extracted from Nellore, Simmental and Angus Red bulls. Four hundred eleven cows calved, producing 119 Nellore, 103 ½Simmental?½Nellore and 189 ½Nellore?½Angus Red calves. The second mating period, which paired Nellore cows with Simmental bulls, was initiated 10 days after parturitions began and lasted for 5 months. Based on the two successive parturitions, the cumulative parturition rate for calving periods of 3, 4 and 5 months was calculated. Although no significant difference was observed for birth weight among the genetic groups, cross-bred calves weighed, on average, 10% more than did pure-bred calves at the age of 205 days. Nellore dams experienced a gestation period that was 7 days longer than did the cross-bred dams, and the former showed a higher parturition rate at 90 and 120 days of the calving season, but not at 150 days (calving rates of 80.6, 76.4 and 76.2% for mothers of Nellore, ½Nellore?½Angus Red and ½Nellore?½Simmental, respectively, p > 0.05). At 90 and 120 days, Nellore dams produced more kg of calf per mated dam. In conclusion, in a short breeding season, Nellore dams nursing pure-bred Nellore calves were found to have a higher biological efficiency compared with Nellore dams nursing cross-bred calves.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectCalfpt_BR
dc.titleReproductive performance and reconception of Nellore cows according to their pure- or cross-bred calves.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-07-25T11:11:11Zpt_BR
dc.subject.nalthesaurusNellorept_BR
dc.subject.nalthesaurusreproductionpt_BR
riaa.ainfo.id1029804pt_BR
riaa.ainfo.lastupdate2017-07-25pt_BR
dc.identifier.doi10.1111/rda.12509.pt_BR
dc.contributor.institutionUNESP; UNESP; ERIKLIS NOGUEIRA, CPAP.pt_BR
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