Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot

Detalhes bibliográficos
Autor(a) principal: Machado Neto, Otávio Rodrigues
Data de Publicação: 2010
Outros Autores: Ladeira, Márcio Machado, Gonçalves, Tarcisio de Moraes, Lopes, Leandro Sâmia, Oliveira, Dalton Mendes de, Bassi, Marcelo Silva
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/42282
Resumo: The objective of this research was to evaluate the dry matter intake (DMI) and nutrient consumption in Nellore and Red Norte steer finished in a feedlot and compare the actual and predicted values by NRC (2000), CNCPS 5.0 and BR-CORTE systems. Forty-one animals, 19 Nellore and 22 Red Norte steers, with initial live weight of 361 ± 31 kg and 367 ± 30 kg, respectively, were used. The experiment lasted 84 days, with 28 days for adaptation and 56 experimental days. The animals were weighed at the beginning and at end of each 28-day period after 16 hours fasting. The dry matter intake was estimated by LIPE, chrome oxide and indigestible dry matter (DMi) markers. There were no differences between Nellore and Red Norte DMI when expressed in kg/day (10.66 vs. 10.44). When intake was expressed in percentage of live weight (% LW), Nellore steer presented higher intake than Red Norte steer (2.55 vs. 2.39%). All the systems evaluated presented a lower predicted intake than the observed intake. However, these differences were smaller for crossbreed animals.
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spelling Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlotConsumo alimentar e avaliação das predições pelos sistemas NRC, CNCPS e BR-CORTE em novilhos Nelore e Red Norte terminados em confinamentoCrossbreedingMarkersNutritional requirementsZebu breedsCruzamentoIndicadoresExigências nutricionaisZebuínosThe objective of this research was to evaluate the dry matter intake (DMI) and nutrient consumption in Nellore and Red Norte steer finished in a feedlot and compare the actual and predicted values by NRC (2000), CNCPS 5.0 and BR-CORTE systems. Forty-one animals, 19 Nellore and 22 Red Norte steers, with initial live weight of 361 ± 31 kg and 367 ± 30 kg, respectively, were used. The experiment lasted 84 days, with 28 days for adaptation and 56 experimental days. The animals were weighed at the beginning and at end of each 28-day period after 16 hours fasting. The dry matter intake was estimated by LIPE, chrome oxide and indigestible dry matter (DMi) markers. There were no differences between Nellore and Red Norte DMI when expressed in kg/day (10.66 vs. 10.44). When intake was expressed in percentage of live weight (% LW), Nellore steer presented higher intake than Red Norte steer (2.55 vs. 2.39%). All the systems evaluated presented a lower predicted intake than the observed intake. However, these differences were smaller for crossbreed animals.Este trabalho foi realizado com os objetivos de avaliar o consumo de matéria seca (CMS) e dos nutrientes da dieta em novilhos Nelore e Red Norte terminados em confinamento e comparar os valores observados aos preditos por meio dos sistemas NRC (2000), CNCPS 5.0 e BR-CORTE. Utilizaram-se 41 novilhos, não-castrados, de dois grupos genéticos, sendo 19 Nelore com peso vivo inicial médio de 361 ± 31 kg e 22 Red Norte com peso vivo inicial de 367 ± 30 kg. No início do período de adaptação, com duração de 28 dias, os animais foram pesados após jejum alimentar de 16 horas e tratados contra endo e ecto parasitas. O período experimental teve duração de 56 dias e, além das pesagens nestes períodos, foram realizadas mensurações do consumo individual, utilizando-se os indicadores LIPE, óxido crômico e matéria seca indigestível (MSi). A comparação entre os dados de consumo observados com aqueles preditos pelos sistemas NRC (2000), CNCPS 5.0 e BR-CORTE foi feita por meio do procedimento PROC REG do software SAS. O consumo de matéria seca expresso em kg/dia não apresentou diferenças entre os grupos genéticos (10,66 vs 10,44). Quando expresso em porcentagem do peso vivo (%PV), o consumo foi maior para os animais da raça Nelore (2,55 vs 2,39%, respectivamente) e, quando expresso em g/kg PV0,75, tendeu a ser maior para a raça Nelore (115 vs 109 g/kg PV0,75). Todos os sistemas avaliados subestimam o consumo de matéria seca, entretanto há menores diferenças entre o consumo observado e o predito para animais mestiços.Sociedade Brasileira de Zootecnia (SBZ)2020-08-06T23:19:42Z2020-08-06T23:19:42Z2010-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMACHADO NETO, O. R. et al. Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 2, p. 394-401, Feb. 2010. DOI: 10.1590/S1516-35982010000200024.http://repositorio.ufla.br/jspui/handle/1/42282Revista Brasileira de Zootecnia (RBZ)reponame: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 deBassi, Marcelo Silvaeng2020-08-06T23:19:42Zoai:localhost:1/42282Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-08-06T23:19:42Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot
Consumo alimentar e avaliação das predições pelos sistemas NRC, CNCPS e BR-CORTE em novilhos Nelore e Red Norte terminados em confinamento
title Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot
spellingShingle Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot
Machado Neto, Otávio Rodrigues
Crossbreeding
Markers
Nutritional requirements
Zebu breeds
Cruzamento
Indicadores
Exigências nutricionais
Zebuínos
title_short Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot
title_full Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot
title_fullStr Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot
title_full_unstemmed Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot
title_sort Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in 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
Bassi, Marcelo Silva
author_role author
author2 Ladeira, Márcio Machado
Gonçalves, Tarcisio de Moraes
Lopes, Leandro Sâmia
Oliveira, Dalton Mendes de
Bassi, Marcelo Silva
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
Bassi, Marcelo Silva
dc.subject.por.fl_str_mv Crossbreeding
Markers
Nutritional requirements
Zebu breeds
Cruzamento
Indicadores
Exigências nutricionais
Zebuínos
topic Crossbreeding
Markers
Nutritional requirements
Zebu breeds
Cruzamento
Indicadores
Exigências nutricionais
Zebuínos
description The objective of this research was to evaluate the dry matter intake (DMI) and nutrient consumption in Nellore and Red Norte steer finished in a feedlot and compare the actual and predicted values by NRC (2000), CNCPS 5.0 and BR-CORTE systems. Forty-one animals, 19 Nellore and 22 Red Norte steers, with initial live weight of 361 ± 31 kg and 367 ± 30 kg, respectively, were used. The experiment lasted 84 days, with 28 days for adaptation and 56 experimental days. The animals were weighed at the beginning and at end of each 28-day period after 16 hours fasting. The dry matter intake was estimated by LIPE, chrome oxide and indigestible dry matter (DMi) markers. There were no differences between Nellore and Red Norte DMI when expressed in kg/day (10.66 vs. 10.44). When intake was expressed in percentage of live weight (% LW), Nellore steer presented higher intake than Red Norte steer (2.55 vs. 2.39%). All the systems evaluated presented a lower predicted intake than the observed intake. However, these differences were smaller for crossbreed animals.
publishDate 2010
dc.date.none.fl_str_mv 2010-02
2020-08-06T23:19:42Z
2020-08-06T23:19:42Z
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. Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 2, p. 394-401, Feb. 2010. DOI: 10.1590/S1516-35982010000200024.
http://repositorio.ufla.br/jspui/handle/1/42282
identifier_str_mv MACHADO NETO, O. R. et al. Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 2, p. 394-401, Feb. 2010. DOI: 10.1590/S1516-35982010000200024.
url http://repositorio.ufla.br/jspui/handle/1/42282
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 (SBZ)
publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia (SBZ)
dc.source.none.fl_str_mv Revista Brasileira de Zootecnia (RBZ)
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
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