Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte

Detalhes bibliográficos
Autor(a) principal: Silveira, Magali Floriano da
Data de Publicação: 2006
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Manancial - Repositório Digital da UFSM
Texto Completo: http://repositorio.ufsm.br/handle/1/10775
Resumo: This experiment was carried out to compare in vivo and laboratorial methods to estimate the nutritive value of beef cattle feeds. Diets were isonitrogenous and composed by corn silage as a roughage source and 25, 40, 55 and 70 % of concentrate. Diets digestibility values measured in an in vivo digestibility assay were compared to those obtained from in situ, in vitro, in vitro/gases assays, as well from values estimated from mathematical equations. The in vivo assay was carried out using four cattle in a Latin Square design. There was not significant method by diet interaction. The in vitro method had good accuracy to estimate diets digestibility. The Weiss equation overestimated diets nutritional value due both, by overestimate fiber digestibility and by underestimate fecal endogenous excretion. As single indicators, degradation rates calculated from both, in situ e in vitro/gas assays, were not accurate to estimate the nutritive value of feeds.
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spelling 2007-02-052007-02-052006-11-27SILVEIRA, Magali Floriano da. Comparison of in vivo and laboratorial methods to assess the nutritive value of beef cattle feeds. 2006. 60 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2006.http://repositorio.ufsm.br/handle/1/10775This experiment was carried out to compare in vivo and laboratorial methods to estimate the nutritive value of beef cattle feeds. Diets were isonitrogenous and composed by corn silage as a roughage source and 25, 40, 55 and 70 % of concentrate. Diets digestibility values measured in an in vivo digestibility assay were compared to those obtained from in situ, in vitro, in vitro/gases assays, as well from values estimated from mathematical equations. The in vivo assay was carried out using four cattle in a Latin Square design. There was not significant method by diet interaction. The in vitro method had good accuracy to estimate diets digestibility. The Weiss equation overestimated diets nutritional value due both, by overestimate fiber digestibility and by underestimate fecal endogenous excretion. As single indicators, degradation rates calculated from both, in situ e in vitro/gas assays, were not accurate to estimate the nutritive value of feeds.O objetivo do experimento foi comparar métodos in vivo e laboratoriais para estimar o valor nutritivo de dietas para bovinos de corte. As dietas avaliadas foram isonitrogenadas e constituídas de silagem de planta inteira de milho e 25, 40, 55, 70 % de concentrado. Os valores de digestibilidade das dietas, obtidos em um ensaio de digestibilidade in vivo, foram comparados com valores estimados em ensaios in situ, in vitro, in vitro/gases e por equações. Para o ensaio de digestiblidade in vivo foram utilizados quatro bovinos, em um delineamento Quadrado Latino 4 x 4. Não houve interação significativa entre métodos e dietas. O método in vitro prediz com boa acurácia a digestibilidade in vivo das dietas experimentais. A equação de Weiss superestimou o valor nutricional destas dietas por superestimar a digestibilidade da fibra e por superestimar a fração endógena fecal. As taxas de degradação estimadas pelos métodos in situ e in vitro/gases isoladamente não foram úteis para estimar o valor nutricional dos alimentos.Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em ZootecniaUFSMBRZootecniaDigestibilidadeEquaçõesIn situIn vitroDigestibilityEquationsIn situIn vitroCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAComparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corteComparison of in vivo and laboratorial methods to assess the nutritive value of beef cattle feedsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisKozloski, Gilberto Vilmarhttp://lattes.cnpq.br/1966801022255836Brondani, Ivan Luizhttp://lattes.cnpq.br/5813089147720195Berto, Jorge Luizhttp://lattes.cnpq.br/8911848521956573Senger, Clóvis Clenio Dieselhttp://lattes.cnpq.br/8370493177310287http://lattes.cnpq.br/7618829620378519Silveira, Magali Floriano da500400000002400500500300500300b4a3eff6-7fb0-444e-9501-ff96d450f4c9755dec57-1286-481d-8956-746153e68678443c169f-f6f1-4b00-ae9d-673e6c418c58aa7ad2f6-c4ca-4f85-ba42-b449fe42d6f40e48584f-682c-479c-823d-89170e3ecce2info:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALMAGALI.pdfapplication/pdf569580http://repositorio.ufsm.br/bitstream/1/10775/1/MAGALI.pdf9bd20d308c85223c960182fbd7377f83MD51TEXTMAGALI.pdf.txtMAGALI.pdf.txtExtracted texttext/plain90211http://repositorio.ufsm.br/bitstream/1/10775/2/MAGALI.pdf.txt141b72bf1d1484b73b358cf3a264ebe4MD52THUMBNAILMAGALI.pdf.jpgMAGALI.pdf.jpgIM Thumbnailimage/jpeg4883http://repositorio.ufsm.br/bitstream/1/10775/3/MAGALI.pdf.jpgdddb4600f90078ee831886bb991722a9MD531/107752023-02-02 15:02:36.14oai:repositorio.ufsm.br:1/10775Repositório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestopendoar:39132023-02-02T18:02:36Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false
dc.title.por.fl_str_mv Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte
dc.title.alternative.eng.fl_str_mv Comparison of in vivo and laboratorial methods to assess the nutritive value of beef cattle feeds
title Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte
spellingShingle Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte
Silveira, Magali Floriano da
Digestibilidade
Equações
In situ
In vitro
Digestibility
Equations
In situ
In vitro
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
title_short Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte
title_full Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte
title_fullStr Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte
title_full_unstemmed Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte
title_sort Comparação de métodos in vivo e laboratoriais para avaliar o valor nutritivo de dietas para bovinos de corte
author Silveira, Magali Floriano da
author_facet Silveira, Magali Floriano da
author_role author
dc.contributor.advisor1.fl_str_mv Kozloski, Gilberto Vilmar
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/1966801022255836
dc.contributor.advisor-co1.fl_str_mv Brondani, Ivan Luiz
dc.contributor.advisor-co1Lattes.fl_str_mv http://lattes.cnpq.br/5813089147720195
dc.contributor.referee1.fl_str_mv Berto, Jorge Luiz
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/8911848521956573
dc.contributor.referee2.fl_str_mv Senger, Clóvis Clenio Diesel
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/8370493177310287
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/7618829620378519
dc.contributor.author.fl_str_mv Silveira, Magali Floriano da
contributor_str_mv Kozloski, Gilberto Vilmar
Brondani, Ivan Luiz
Berto, Jorge Luiz
Senger, Clóvis Clenio Diesel
dc.subject.por.fl_str_mv Digestibilidade
Equações
In situ
In vitro
topic Digestibilidade
Equações
In situ
In vitro
Digestibility
Equations
In situ
In vitro
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
dc.subject.eng.fl_str_mv Digestibility
Equations
In situ
In vitro
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
description This experiment was carried out to compare in vivo and laboratorial methods to estimate the nutritive value of beef cattle feeds. Diets were isonitrogenous and composed by corn silage as a roughage source and 25, 40, 55 and 70 % of concentrate. Diets digestibility values measured in an in vivo digestibility assay were compared to those obtained from in situ, in vitro, in vitro/gases assays, as well from values estimated from mathematical equations. The in vivo assay was carried out using four cattle in a Latin Square design. There was not significant method by diet interaction. The in vitro method had good accuracy to estimate diets digestibility. The Weiss equation overestimated diets nutritional value due both, by overestimate fiber digestibility and by underestimate fecal endogenous excretion. As single indicators, degradation rates calculated from both, in situ e in vitro/gas assays, were not accurate to estimate the nutritive value of feeds.
publishDate 2006
dc.date.issued.fl_str_mv 2006-11-27
dc.date.accessioned.fl_str_mv 2007-02-05
dc.date.available.fl_str_mv 2007-02-05
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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status_str publishedVersion
dc.identifier.citation.fl_str_mv SILVEIRA, Magali Floriano da. Comparison of in vivo and laboratorial methods to assess the nutritive value of beef cattle feeds. 2006. 60 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2006.
dc.identifier.uri.fl_str_mv http://repositorio.ufsm.br/handle/1/10775
identifier_str_mv SILVEIRA, Magali Floriano da. Comparison of in vivo and laboratorial methods to assess the nutritive value of beef cattle feeds. 2006. 60 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2006.
url http://repositorio.ufsm.br/handle/1/10775
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dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Zootecnia
dc.publisher.initials.fl_str_mv UFSM
dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Zootecnia
publisher.none.fl_str_mv Universidade Federal de Santa Maria
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