Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética

Detalhes bibliográficos
Autor(a) principal: Amaral, Glaucia Azevedo do
Data de Publicação: 2008
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Manancial - Repositório Digital da UFSM
dARK ID: ark:/26339/0013000014p8h
Texto Completo: http://repositorio.ufsm.br/handle/1/10710
Resumo: The present study was carried out to determine the effects of supplementing fresh ryegrass forage based diets with starch, rumen degradable or undegradable protein sources on intake, digestion and nitrogen retention, rumen digestibility and the duodenal nitrogen flow. Ten Corriedale lambs (26 kg mean body weight), kept in metabolic cages were used in a 5 x 5 Latin Square experimental design. Five lambs were previously fitted with permanent ruminal and duodenal cannulae. Treatments tested were: fresh ryegrass forage cut daily and feed without supplementation (AZ); or same forage supplemented with either cassava meal (FM); calcium caseinate (CA), corn gluten meal 21% CP (FMG 21) or corn gluten meal 60% CP (FGM 60). Feeding FGM 21, FGM 60 and CA increased (P<0.05) intake of total dry matter (DM) (P<0.05), organic matter (OM) and digestible organic matter. True digestibility of OM and neutral detergent fibre (NDF) digestibility were similar between treatments, whereas CA and FM treatments increased DM and OM digestibilities. Nitrogen intake was higher (P<0.05) in lambs receiving nitrogen supplements, but microbial N synthesis and N retention was similar between treatments. Ruminal pH values and ammonia N concentration varied in a cubic (P<0.05) way wit time after feeding. Duodenal flux of amino acids was higher (P<0.05) for lambs consuming the FGM 60 supplement. All supplements increased (P<0.05) apparent and true OM ruminal digestibility. The efficiency of rumen microbial N synthesis decreased (P<0.05) in animals fed FGM 21, CA or FM supplements. In conclusion all supplements increased intake of MOD, but only supplement containing rumen undegradable protein increased the amino acids to lambs fed with ryegrass.
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spelling Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energéticaNutritive value of diets based on fresh ryegrass (Lolium multiflorum, Lam.) forage supplemented with nitrogen or energyConsumoDigestibilidadeGramínea temperadaFluxo duodenalAminoácidosIntakeDigestibilityTemperate grassDuodenal fluxAmino acidsCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAThe present study was carried out to determine the effects of supplementing fresh ryegrass forage based diets with starch, rumen degradable or undegradable protein sources on intake, digestion and nitrogen retention, rumen digestibility and the duodenal nitrogen flow. Ten Corriedale lambs (26 kg mean body weight), kept in metabolic cages were used in a 5 x 5 Latin Square experimental design. Five lambs were previously fitted with permanent ruminal and duodenal cannulae. Treatments tested were: fresh ryegrass forage cut daily and feed without supplementation (AZ); or same forage supplemented with either cassava meal (FM); calcium caseinate (CA), corn gluten meal 21% CP (FMG 21) or corn gluten meal 60% CP (FGM 60). Feeding FGM 21, FGM 60 and CA increased (P<0.05) intake of total dry matter (DM) (P<0.05), organic matter (OM) and digestible organic matter. True digestibility of OM and neutral detergent fibre (NDF) digestibility were similar between treatments, whereas CA and FM treatments increased DM and OM digestibilities. Nitrogen intake was higher (P<0.05) in lambs receiving nitrogen supplements, but microbial N synthesis and N retention was similar between treatments. Ruminal pH values and ammonia N concentration varied in a cubic (P<0.05) way wit time after feeding. Duodenal flux of amino acids was higher (P<0.05) for lambs consuming the FGM 60 supplement. All supplements increased (P<0.05) apparent and true OM ruminal digestibility. The efficiency of rumen microbial N synthesis decreased (P<0.05) in animals fed FGM 21, CA or FM supplements. In conclusion all supplements increased intake of MOD, but only supplement containing rumen undegradable protein increased the amino acids to lambs fed with ryegrass.Conselho Nacional de Desenvolvimento Científico e TecnológicoEste estudo foi conduzido com o objetivo de avaliar se e em que grau a oferta suplementar de amido ou proteína degradável no rúmen, assim como de proteína não degradável, afetam o consumo, os processos de digestão, a retenção de nitrogênio, a digestibilidade ruminal e o fluxo duodenal das frações nitrogenadas em ovinos alimentados com azevém (Lolium multiflorum, Lam) à vontade. Foram utilizados dez cordeiros castrados Corriedale (PV médio de 26 kg), mantidos em gaiolas de metabolismo em um delineamento experimental Quadrado Latino 5 x 5. Cinco destes animais foram implantados com sondas permanentes no rúmen e com cânulas duodenais. As dietas experimentais utilizadas foram azevém sem suplementação (AZ) ou azevém mais farinha de mandioca (FM), caseinato de cálcio (CA), farelo de glúten de milho 21% PB (FGM 21) ou farelo de glúten de milho 60% PB (FGM 60). A suplementação com FGM 21, FGM 60 e CA aumentou (P<0,05) consumo total de matéria seca (MS), matéria orgânica (MO) e MO digestível. As suplementações com CA e FM melhoraram (P<0,05) a digestibilidade aparente da MS e MO, no entanto, a digestibilidade verdadeira total da MO e a digestibilidade da fibra em detergente neutro (FDN) foram similares entre os tratamentos. O consumo de nitrogênio (N) foi superior (P<0,05) pelos cordeiros que receberam suplementação nitrogenada. A síntese de N microbiano, assim como a retenção de N foram similares entre os tratamentos. Os valores de pH ruminal e concentração de Namoniacal no fluído ruminal variaram cubicamente (P<0,05) ao longo do tempo após a alimentação. O fluxo duodenal de aminoácidos foi superior (P<0,05) nos cordeiros suplementados com FGM 60. A suplementação aumentou (P<0,05) a digestibilidade ruminal aparente e verdadeira da MO. A eficiência de síntese de nitrogênio microbiano diminuiu (P<0,05) nos cordeiros suplementados com FGM 21, CA e FM. Em conclusão, todos os suplementos aumentaram o consumo de MOD, mas somente o suplemento caracterizado por ter proteína de baixa degradabilidade aumentou a oferta de aminoácidos aos animais alimentados com azevém.Universidade Federal de Santa MariaBRZootecniaUFSMPrograma de Pós-Graduação em ZootecniaKozloski, Gilberto Vilmarhttp://lattes.cnpq.br/1966801022255836Sanchez, Luis Maria Bonnecarrèrehttp://lattes.cnpq.br/4547694242267082Ribeiro Filho, Henrique Mendonça Nuneshttp://lattes.cnpq.br/8550194926612730Amaral, Glaucia Azevedo do2017-07-042017-07-042008-02-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfAMARAL, Glaucia Azevedo do. Nutritive value of diets based on fresh ryegrass (Lolium multiflorum, Lam.) forage supplemented with nitrogen or energy. 2008. 72 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2008.http://repositorio.ufsm.br/handle/1/10710ark:/26339/0013000014p8hporinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2022-04-12T18:17:35Zoai:repositorio.ufsm.br:1/10710Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-04-12T18:17:35Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética
Nutritive value of diets based on fresh ryegrass (Lolium multiflorum, Lam.) forage supplemented with nitrogen or energy
title Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética
spellingShingle Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética
Amaral, Glaucia Azevedo do
Consumo
Digestibilidade
Gramínea temperada
Fluxo duodenal
Aminoácidos
Intake
Digestibility
Temperate grass
Duodenal flux
Amino acids
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
title_short Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética
title_full Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética
title_fullStr Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética
title_full_unstemmed Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética
title_sort Valor alimentar de dietas com azevém (Lolium multiflorum, Lam.) e suplementação nitrogenada ou energética
author Amaral, Glaucia Azevedo do
author_facet Amaral, Glaucia Azevedo do
author_role author
dc.contributor.none.fl_str_mv Kozloski, Gilberto Vilmar
http://lattes.cnpq.br/1966801022255836
Sanchez, Luis Maria Bonnecarrère
http://lattes.cnpq.br/4547694242267082
Ribeiro Filho, Henrique Mendonça Nunes
http://lattes.cnpq.br/8550194926612730
dc.contributor.author.fl_str_mv Amaral, Glaucia Azevedo do
dc.subject.por.fl_str_mv Consumo
Digestibilidade
Gramínea temperada
Fluxo duodenal
Aminoácidos
Intake
Digestibility
Temperate grass
Duodenal flux
Amino acids
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
topic Consumo
Digestibilidade
Gramínea temperada
Fluxo duodenal
Aminoácidos
Intake
Digestibility
Temperate grass
Duodenal flux
Amino acids
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
description The present study was carried out to determine the effects of supplementing fresh ryegrass forage based diets with starch, rumen degradable or undegradable protein sources on intake, digestion and nitrogen retention, rumen digestibility and the duodenal nitrogen flow. Ten Corriedale lambs (26 kg mean body weight), kept in metabolic cages were used in a 5 x 5 Latin Square experimental design. Five lambs were previously fitted with permanent ruminal and duodenal cannulae. Treatments tested were: fresh ryegrass forage cut daily and feed without supplementation (AZ); or same forage supplemented with either cassava meal (FM); calcium caseinate (CA), corn gluten meal 21% CP (FMG 21) or corn gluten meal 60% CP (FGM 60). Feeding FGM 21, FGM 60 and CA increased (P<0.05) intake of total dry matter (DM) (P<0.05), organic matter (OM) and digestible organic matter. True digestibility of OM and neutral detergent fibre (NDF) digestibility were similar between treatments, whereas CA and FM treatments increased DM and OM digestibilities. Nitrogen intake was higher (P<0.05) in lambs receiving nitrogen supplements, but microbial N synthesis and N retention was similar between treatments. Ruminal pH values and ammonia N concentration varied in a cubic (P<0.05) way wit time after feeding. Duodenal flux of amino acids was higher (P<0.05) for lambs consuming the FGM 60 supplement. All supplements increased (P<0.05) apparent and true OM ruminal digestibility. The efficiency of rumen microbial N synthesis decreased (P<0.05) in animals fed FGM 21, CA or FM supplements. In conclusion all supplements increased intake of MOD, but only supplement containing rumen undegradable protein increased the amino acids to lambs fed with ryegrass.
publishDate 2008
dc.date.none.fl_str_mv 2008-02-15
2017-07-04
2017-07-04
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv AMARAL, Glaucia Azevedo do. Nutritive value of diets based on fresh ryegrass (Lolium multiflorum, Lam.) forage supplemented with nitrogen or energy. 2008. 72 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2008.
http://repositorio.ufsm.br/handle/1/10710
dc.identifier.dark.fl_str_mv ark:/26339/0013000014p8h
identifier_str_mv AMARAL, Glaucia Azevedo do. Nutritive value of diets based on fresh ryegrass (Lolium multiflorum, Lam.) forage supplemented with nitrogen or energy. 2008. 72 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2008.
ark:/26339/0013000014p8h
url http://repositorio.ufsm.br/handle/1/10710
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
BR
Zootecnia
UFSM
Programa de Pós-Graduação em Zootecnia
publisher.none.fl_str_mv Universidade Federal de Santa Maria
BR
Zootecnia
UFSM
Programa de Pós-Graduação em Zootecnia
dc.source.none.fl_str_mv reponame:Manancial - Repositório Digital da UFSM
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Manancial - Repositório Digital da UFSM
collection Manancial - Repositório Digital da UFSM
repository.name.fl_str_mv Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv atendimento.sib@ufsm.br||tedebc@gmail.com
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