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: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/45536
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.
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spelling Performance and carcass traits of Nellore and Red Norte steers finished in feedlotDesempenho e características de carcaça de novilhos das raças Nelore e Red Norte terminados em confinamentoComposite breedsMarkersNutritional requirementsPrediction equationsZebu cattleEquações de prediçãoExigências nutricionaisIndicadoresRaças compostasZebuínosThe 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.Objetivou-se avaliar o ganho médio diário (GMD) e as características de carcaça em novilhos das raças Nelore e Red Norte, não-castrados, terminados em confinamento e avaliar as predições do desempenho pelos sistemas CNCPS 5.0, NRC (2000) e BR-CORTE. Utilizaram-se 41 novilhos: 19 do grupo Nelore com peso vivo inicial de 361 ± 31 kg e 22 do grupo Red Norte com peso vivo inicial de 367 ± 30 kg. O período de adaptação teve duração de 28 dias. A avaliação do desempenho animal foi composta de três períodos de 28 dias, totalizando 84 dias. Ao final de cada período, realizou-se a pesagem dos animais após jejum alimentar de 16 horas. Na raça Red Norte, o ganho médio diário foi superior ao da raça Nelore (1,81 vs. 1,43 kg/dia). Os animais da raça Red Norte apresentaram também maior área de olho-de-lombo (75,41 cm2 vs. 68,67 cm2). Não foi observada diferença nas espessuras de gordura subcutânea e de gordura na garupa entre os grupos genéticos. Nenhum dos sistemas de exigências nutricionais avaliados foram eficientes para a predição do desempenho animal. Na raça Nelore, o ganho médio diário observado foi de 1,53 kg/dia, com valores preditos de 1,53; 1,70 e 1,82 kg/dia pelos sistemas NRC, CNCPS e BR-CORTE. Apesar de os valores médio e preditos pelo sistema NRC terem sido semelhantes, de acordo com a equação de regressão, o intercepto e a inclinação foram diferentes de zero e um. Na raça Red Norte, o desempenho observado foi de 1,88 kg/dia com valores preditos de 1,50; 1,66 e 1,72 kg/dia pelos sistemas NRC, CNCPS e BR-CORTE, provavelmente porque o banco de dados desses sistemas é baseado principalmente em resultados obtidos em bovinos Angus.Sociedade Brasileira de Zootecnia2020-11-17T18:40:36Z2020-11-17T18:40:36Z2011-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMACHADO NETO, O. R. et al. Performance and carcass traits of Nellore and Red Norte steers finished in feedlot. Revista Brasileira de Zootecnia, Viçosa, MG, v. 40, n. 5, p. 1080-1087, 2011. DOI: http://dx.doi.org/10.1590/S1516-35982011000500020.http://repositorio.ufla.br/jspui/handle/1/45536Revista Brasileira de Zootecniareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessMachado Neto, Otávio RodriguesLadeira, Márcio MachadoGonçalves, Tarcisio de MoraesLopes, Leandro SâmiaOliveira, Dalton Mendes deLima, Renato Ribeiro deeng2020-11-17T18:40:58Zoai:localhost:1/45536Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-11-17T18:40:58Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
Desempenho e características de carcaça de novilhos das raças Nelore e Red Norte terminados em confinamento
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
Equações de predição
Exigências nutricionais
Indicadores
Raças compostas
Zebuínos
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
Equações de predição
Exigências nutricionais
Indicadores
Raças compostas
Zebuínos
topic Composite breeds
Markers
Nutritional requirements
Prediction equations
Zebu cattle
Equações de predição
Exigências nutricionais
Indicadores
Raças compostas
Zebuínos
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
2020-11-17T18:40:36Z
2020-11-17T18:40:36Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv MACHADO NETO, O. R. et al. Performance and carcass traits of Nellore and Red Norte steers finished in feedlot. Revista Brasileira de Zootecnia, Viçosa, MG, v. 40, n. 5, p. 1080-1087, 2011. DOI: http://dx.doi.org/10.1590/S1516-35982011000500020.
http://repositorio.ufla.br/jspui/handle/1/45536
identifier_str_mv MACHADO NETO, O. R. et al. Performance and carcass traits of Nellore and Red Norte steers finished in feedlot. Revista Brasileira de Zootecnia, Viçosa, MG, v. 40, n. 5, p. 1080-1087, 2011. DOI: http://dx.doi.org/10.1590/S1516-35982011000500020.
url http://repositorio.ufla.br/jspui/handle/1/45536
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution-NonCommercial 4.0 International
http://creativecommons.org/licenses/by-nc/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial 4.0 International
http://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
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institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
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