Performance and carcass traits of Nellore and Red Norte steers finished in feedlot
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , |
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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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) |
instacron_str |
UFLA |
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) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1815439070018404352 |