Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights

Detalhes bibliográficos
Autor(a) principal: Mello, Renius
Data de Publicação: 2009
Outros Autores: Queiroz, Augusto César de, Resende, Flávio Dutra de, Faria, Marcelo Henrique de, Henrique, Douglas Sampaio, Maldonado, Fabiana
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://dx.doi.org/10.1590/S1516-35982010000300018
http://www.locus.ufv.br/handle/123456789/14828
Resumo: The objective of this study was to assess the bionutritional efficiency of crossbred F1 Red Angus × Nellore (½ RA ½ N) and F1 Blonde D'Aquitaine × Nellore (½ BA ½ N) young bulls finished on feedlot and slaughtered at 480, 520 and 560 kg body weight. A completely randomized experimental design in a 2 × 3 (genetic group × slaughter weight) factorial arrangement with six replicates was used. The ½ BA ½ N young bulls showed higher kidney, pelvic and inguinal fat (KPIF, kg and % BW) and lower multivariate biological nutritional index (MBNI) and residual feed intake than ½ RA ½ N young bulls. The young bulls slaughtered at heavier weight had larger ribeye area (cm2), fat thickness over the 12-13th rib, fat thickness over the rump, KPIF (kg and % BW), dry matter intake (DMI, kg/d), net energy intake (MJ/d) and metabolizable protein intake (g/d), and MBNI compared to young bulls slaughtered at lighter weight. Furthermore, the ½ BA ½ N young bulls slaughtered at 480 kg had lower feed conversion than the others. On the other hand, the average daily weight gain (kg/d), DMI (% BW and g/BW0.75), feed efficiency and Kleiber ratio did not differ between genetic group, slaughter weight and genetic group versus slaughter weight interaction. Therefore, crossbred F1 Blonde D'Aquitaine × Nellore young bulls and animals slaughtered at lighter weights are more bionutritionally efficient in the finishing phase on feedlot.
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spelling Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weightsAnimal performanceFeed efficiencyFeed conversionKleiber ratioMultivariate biological nutritional indexResidual feed intakeThe objective of this study was to assess the bionutritional efficiency of crossbred F1 Red Angus × Nellore (½ RA ½ N) and F1 Blonde D'Aquitaine × Nellore (½ BA ½ N) young bulls finished on feedlot and slaughtered at 480, 520 and 560 kg body weight. A completely randomized experimental design in a 2 × 3 (genetic group × slaughter weight) factorial arrangement with six replicates was used. The ½ BA ½ N young bulls showed higher kidney, pelvic and inguinal fat (KPIF, kg and % BW) and lower multivariate biological nutritional index (MBNI) and residual feed intake than ½ RA ½ N young bulls. The young bulls slaughtered at heavier weight had larger ribeye area (cm2), fat thickness over the 12-13th rib, fat thickness over the rump, KPIF (kg and % BW), dry matter intake (DMI, kg/d), net energy intake (MJ/d) and metabolizable protein intake (g/d), and MBNI compared to young bulls slaughtered at lighter weight. Furthermore, the ½ BA ½ N young bulls slaughtered at 480 kg had lower feed conversion than the others. On the other hand, the average daily weight gain (kg/d), DMI (% BW and g/BW0.75), feed efficiency and Kleiber ratio did not differ between genetic group, slaughter weight and genetic group versus slaughter weight interaction. Therefore, crossbred F1 Blonde D'Aquitaine × Nellore young bulls and animals slaughtered at lighter weights are more bionutritionally efficient in the finishing phase on feedlot.Objetivou-se avaliar a eficiência bionutricional de tourinhos mestiços F1 Red Angus × Nelore (½ RA ½ N) e F1 Blonde D'Aquitane × Nelore (½ BA ½ N) terminados em confinamento e abatidos com 480, 520 e 560 kg de peso corporal. O delineamento experimental foi inteiramente casualizado em arranjo fatorial 2 × 3 (grupo genético × peso de abate) com seis repetições. Os tourinhos ½ BA ½ N tiveram maior gordura renal, pélvica e inguinal (GRPI, kg e % PV); e menor índice nutricional multivariado biológico (INMB) e consumo alimentar residual em comparação aos tourinhos ½ RA ½ N. Os tourinhos abatidos com maior peso apresentaram maior área de olho-de-lombo (cm2), espessura de gordura subcutânea, gordura de cobertura na garupa, GRPI (kg e % PV), consumo de matéria seca (CMS, kg/d), consumo de energia líquida (MJ/d) e proteína metabolizável (g/dia), e INMB em relação aos abatidos mais leves. Além disso, os tourinhos ½ BA ½ N abatidos com 480 kg tiveram a menor conversão alimentar. Por outro lado, o ganho médio diário de peso (kg/dia), o consumo de matéria seca (% PV e g/UTM), a eficiência alimentar e a relação de Kleiber não diferiram entre os grupos genéticos, os pesos de abate e a interação grupo genético versus peso de abate. Tourinhos F1 Blonde D'Aquitaine × Nelore e os animais abatidos mais leves são bionutricionalmente mais eficientes na fase de terminação em confinamento.Revista Brasileira de Zootecnia2017-12-12T12:21:10Z2017-12-12T12:21:10Z2009-06-16info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf18069290http://dx.doi.org/10.1590/S1516-35982010000300018http://www.locus.ufv.br/handle/123456789/14828engv. 39, n. 3, p. 582-593, Mar. 2010Mello, ReniusQueiroz, Augusto César deResende, Flávio Dutra deFaria, Marcelo Henrique deHenrique, Douglas SampaioMaldonado, Fabianainfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T07:50:54Zoai:locus.ufv.br:123456789/14828Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T07:50:54LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
title Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
spellingShingle Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
Mello, Renius
Animal performance
Feed efficiency
Feed conversion
Kleiber ratio
Multivariate biological nutritional index
Residual feed intake
title_short Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
title_full Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
title_fullStr Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
title_full_unstemmed Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
title_sort Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
author Mello, Renius
author_facet Mello, Renius
Queiroz, Augusto César de
Resende, Flávio Dutra de
Faria, Marcelo Henrique de
Henrique, Douglas Sampaio
Maldonado, Fabiana
author_role author
author2 Queiroz, Augusto César de
Resende, Flávio Dutra de
Faria, Marcelo Henrique de
Henrique, Douglas Sampaio
Maldonado, Fabiana
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Mello, Renius
Queiroz, Augusto César de
Resende, Flávio Dutra de
Faria, Marcelo Henrique de
Henrique, Douglas Sampaio
Maldonado, Fabiana
dc.subject.por.fl_str_mv Animal performance
Feed efficiency
Feed conversion
Kleiber ratio
Multivariate biological nutritional index
Residual feed intake
topic Animal performance
Feed efficiency
Feed conversion
Kleiber ratio
Multivariate biological nutritional index
Residual feed intake
description The objective of this study was to assess the bionutritional efficiency of crossbred F1 Red Angus × Nellore (½ RA ½ N) and F1 Blonde D'Aquitaine × Nellore (½ BA ½ N) young bulls finished on feedlot and slaughtered at 480, 520 and 560 kg body weight. A completely randomized experimental design in a 2 × 3 (genetic group × slaughter weight) factorial arrangement with six replicates was used. The ½ BA ½ N young bulls showed higher kidney, pelvic and inguinal fat (KPIF, kg and % BW) and lower multivariate biological nutritional index (MBNI) and residual feed intake than ½ RA ½ N young bulls. The young bulls slaughtered at heavier weight had larger ribeye area (cm2), fat thickness over the 12-13th rib, fat thickness over the rump, KPIF (kg and % BW), dry matter intake (DMI, kg/d), net energy intake (MJ/d) and metabolizable protein intake (g/d), and MBNI compared to young bulls slaughtered at lighter weight. Furthermore, the ½ BA ½ N young bulls slaughtered at 480 kg had lower feed conversion than the others. On the other hand, the average daily weight gain (kg/d), DMI (% BW and g/BW0.75), feed efficiency and Kleiber ratio did not differ between genetic group, slaughter weight and genetic group versus slaughter weight interaction. Therefore, crossbred F1 Blonde D'Aquitaine × Nellore young bulls and animals slaughtered at lighter weights are more bionutritionally efficient in the finishing phase on feedlot.
publishDate 2009
dc.date.none.fl_str_mv 2009-06-16
2017-12-12T12:21:10Z
2017-12-12T12:21:10Z
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 18069290
http://dx.doi.org/10.1590/S1516-35982010000300018
http://www.locus.ufv.br/handle/123456789/14828
identifier_str_mv 18069290
url http://dx.doi.org/10.1590/S1516-35982010000300018
http://www.locus.ufv.br/handle/123456789/14828
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv v. 39, n. 3, p. 582-593, Mar. 2010
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Revista Brasileira de Zootecnia
publisher.none.fl_str_mv Revista Brasileira de Zootecnia
dc.source.none.fl_str_mv reponame:LOCUS Repositório Institucional da UFV
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str LOCUS Repositório Institucional da UFV
collection LOCUS Repositório Institucional da UFV
repository.name.fl_str_mv LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv fabiojreis@ufv.br
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