Body chemical composition, tissue deposition rates and gain composition of young Nellore cattle selected for postweaning weight

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dc.contributor.authorBonilha, Eduardo Figueiredo Martins
dc.contributor.authorBranco, Renata Helena
dc.contributor.authorBonilha, Sarah Figueiredo Martins
dc.contributor.authorAraújo, Fabiana Lana de
dc.contributor.authorCyrillo, Joslaine Noely dos Santos Gonçalves
dc.contributor.authorMagnani, Elaine
dc.date.accessioned2024-05-15T13:02:18Z
dc.date.available2024-05-15T13:02:18Z
dc.date.issued2014
dc.description.abstractEmpty body and carcass chemical composition were determined in 67 Nellore bulls from Selection Nellore (NeS) and Control Nellore (NeC) herds of an animal breeding program for growth, slaughtered at 570 days of average age, after 100 days of feedlot. Selection Nellore animals had, respectively, 360 and 430 kg of initial and slaughter body weight, and NeC animals had 318 and 373 kg for the same traits. Animals were slaughtered and empty body composition was determined by chemical analysis of the components blood, hide, head and feet, viscera and carcass. Tissue deposition rates and gain chemical composition were also determined based on gains estimated by comparative slaughter technique. Significant differences were detected between NeS and NeC animals for slaughter body weight, empty body weight, empty body gain rate, and contents of water, protein, ash and retained energy in empty body, showing that selected animals had greater body sizes and growth rates. There were no significant differences in fat contents in empty body and carcass, suggesting that selected animals had higher growth rates as compared with the control, and were slaughtered with good body and carcass fat contents in the same feedlot time. Control Nellore animals showed a 10% higher gain in fat percentage than NeS in the period. This shows that the growth of bone and muscle ceased earlier and NeC group accumulated more fat. Animals selected for growth have heavier carcasses and greater tissue deposition rates with proportional composition similar to unselected animals.
dc.identifier.doi10.1590/S1516-35982014000400003
dc.identifier.issn1516-3598
dc.identifier.otherS1516-35982014000400175-scl
dc.identifier.urihttps://repositorio-aptaregional.agricultura.sp.gov.br/handle/123456789/1212
dc.relation.ispartofRevista Brasileira de Zootecnia
dc.subjectBos indicus
dc.subjectefficiency
dc.subjectfat
dc.subjectprotein
dc.subjectselection
dc.subjectweight gain
dc.titleBody chemical composition, tissue deposition rates and gain composition of young Nellore cattle selected for postweaning weight
dc.typeArtigos
oaire.citation.endPage182
oaire.citation.issue4
oaire.citation.startPage175
oaire.citation.volume43

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