Performance and carcass traits of Nellore and Red Norte steers finished in feedlot

Detalhes bibliográficos
Autor(a) principal: Machado Neto,Otávio Rodrigues
Data de Publicação: 2011
Outros Autores: Ladeira,Márcio Machado, Gonçalves,Tarcisio de Moraes, Lopes,Leandro Sâmia, Oliveira,Dalton Mendes de, Lima,Renato Ribeiro de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Zootecnia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500020
Resumo: The objective of this work was to evaluate average daily gain (ADG) and carcass traits in Nellore and Red Norte steers, finished in feedlots and to evaluate performance predictions by using the systems BR-CORTE, CNCPS 5.0 and NRC (2000). It was used 41 steers: 19 Nelore animals with initial body weight of 361 ± 31 kg and 22 Red Norte animals with initial body weight of 367 ± 30 kg. Adaptation period lasted 28 days. Animal performance evaluation was composed of three 28 day period, totaling 84 days. At the end of each period, animals were weighed after a 16-hour feeding fast. Average gain weight of Red Norte steers was greater than Nellore breed animals (1.43 vs. 1.81 kg/day, respectively). Red Norte animals also presented greater loin eye area (75.41 cm² vs. 68.67 cm²). It was not observed any differences on subcutaneous fat thickness and on rump fat among the genetic groups. None of the nutritional requirement system evaluated were efficient in predicting animal performance. For Nellore breed, daily average gain observed was 1.53kg/day, with values of 1.53, 1.70 and 1.82 kg/day predicted by NRC, CNCPS and BR-CORTE systems. Although average values and predicted by NRC were similar, according to the regression equation, intercept and inclination were different from zero and one. For Red Norte breed, performance observed was 1.88 kg/day with values of 1.50, 1.66 and 1.72 predicted by the systems NRC, CNCPS and BR-CORTE, probably because database of those systems is based mainly on results obtained from Angus bovines.
id SBZ-1_979fcce7503b9dbe1c87fa50c3d2afd0
oai_identifier_str oai:scielo:S1516-35982011000500020
network_acronym_str SBZ-1
network_name_str Revista Brasileira de Zootecnia (Online)
repository_id_str
spelling Performance and carcass traits of Nellore and Red Norte steers finished in feedlotcomposite breedsmarkersnutritional requirementsprediction equationszebu cattleThe objective of this work was to evaluate average daily gain (ADG) and carcass traits in Nellore and Red Norte steers, finished in feedlots and to evaluate performance predictions by using the systems BR-CORTE, CNCPS 5.0 and NRC (2000). It was used 41 steers: 19 Nelore animals with initial body weight of 361 ± 31 kg and 22 Red Norte animals with initial body weight of 367 ± 30 kg. Adaptation period lasted 28 days. Animal performance evaluation was composed of three 28 day period, totaling 84 days. At the end of each period, animals were weighed after a 16-hour feeding fast. Average gain weight of Red Norte steers was greater than Nellore breed animals (1.43 vs. 1.81 kg/day, respectively). Red Norte animals also presented greater loin eye area (75.41 cm² vs. 68.67 cm²). It was not observed any differences on subcutaneous fat thickness and on rump fat among the genetic groups. None of the nutritional requirement system evaluated were efficient in predicting animal performance. For Nellore breed, daily average gain observed was 1.53kg/day, with values of 1.53, 1.70 and 1.82 kg/day predicted by NRC, CNCPS and BR-CORTE systems. Although average values and predicted by NRC were similar, according to the regression equation, intercept and inclination were different from zero and one. For Red Norte breed, performance observed was 1.88 kg/day with values of 1.50, 1.66 and 1.72 predicted by the systems NRC, CNCPS and BR-CORTE, probably because database of those systems is based mainly on results obtained from Angus bovines.Sociedade Brasileira de Zootecnia2011-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500020Revista Brasileira de Zootecnia v.40 n.5 2011reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982011000500020info:eu-repo/semantics/openAccessMachado Neto,Otávio RodriguesLadeira,Márcio MachadoGonçalves,Tarcisio de MoraesLopes,Leandro SâmiaOliveira,Dalton Mendes deLima,Renato Ribeiro deeng2011-05-25T00:00:00Zoai:scielo:S1516-35982011000500020Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2011-05-25T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false
dc.title.none.fl_str_mv Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
title Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
spellingShingle Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
Machado Neto,Otávio Rodrigues
composite breeds
markers
nutritional requirements
prediction equations
zebu cattle
title_short Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
title_full Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
title_fullStr Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
title_full_unstemmed Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
title_sort Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
author Machado Neto,Otávio Rodrigues
author_facet Machado Neto,Otávio Rodrigues
Ladeira,Márcio Machado
Gonçalves,Tarcisio de Moraes
Lopes,Leandro Sâmia
Oliveira,Dalton Mendes de
Lima,Renato Ribeiro de
author_role author
author2 Ladeira,Márcio Machado
Gonçalves,Tarcisio de Moraes
Lopes,Leandro Sâmia
Oliveira,Dalton Mendes de
Lima,Renato Ribeiro de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Machado Neto,Otávio Rodrigues
Ladeira,Márcio Machado
Gonçalves,Tarcisio de Moraes
Lopes,Leandro Sâmia
Oliveira,Dalton Mendes de
Lima,Renato Ribeiro de
dc.subject.por.fl_str_mv composite breeds
markers
nutritional requirements
prediction equations
zebu cattle
topic composite breeds
markers
nutritional requirements
prediction equations
zebu cattle
description The objective of this work was to evaluate average daily gain (ADG) and carcass traits in Nellore and Red Norte steers, finished in feedlots and to evaluate performance predictions by using the systems BR-CORTE, CNCPS 5.0 and NRC (2000). It was used 41 steers: 19 Nelore animals with initial body weight of 361 ± 31 kg and 22 Red Norte animals with initial body weight of 367 ± 30 kg. Adaptation period lasted 28 days. Animal performance evaluation was composed of three 28 day period, totaling 84 days. At the end of each period, animals were weighed after a 16-hour feeding fast. Average gain weight of Red Norte steers was greater than Nellore breed animals (1.43 vs. 1.81 kg/day, respectively). Red Norte animals also presented greater loin eye area (75.41 cm² vs. 68.67 cm²). It was not observed any differences on subcutaneous fat thickness and on rump fat among the genetic groups. None of the nutritional requirement system evaluated were efficient in predicting animal performance. For Nellore breed, daily average gain observed was 1.53kg/day, with values of 1.53, 1.70 and 1.82 kg/day predicted by NRC, CNCPS and BR-CORTE systems. Although average values and predicted by NRC were similar, according to the regression equation, intercept and inclination were different from zero and one. For Red Norte breed, performance observed was 1.88 kg/day with values of 1.50, 1.66 and 1.72 predicted by the systems NRC, CNCPS and BR-CORTE, probably because database of those systems is based mainly on results obtained from Angus bovines.
publishDate 2011
dc.date.none.fl_str_mv 2011-05-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-35982011000500020
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
dc.source.none.fl_str_mv Revista Brasileira de Zootecnia v.40 n.5 2011
reponame:Revista Brasileira de Zootecnia (Online)
instname:Sociedade Brasileira de Zootecnia (SBZ)
instacron:SBZ
instname_str Sociedade Brasileira de Zootecnia (SBZ)
instacron_str SBZ
institution SBZ
reponame_str Revista Brasileira de Zootecnia (Online)
collection Revista Brasileira de Zootecnia (Online)
repository.name.fl_str_mv Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)
repository.mail.fl_str_mv ||bz@sbz.org.br|| secretariarbz@sbz.org.br
_version_ 1750318147840245760