In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds

Detalhes bibliográficos
Autor(a) principal: Zorzi,Karina
Data de Publicação: 2009
Outros Autores: Detmann,Edenio, Queiroz,Augusto César de, Paulino,Mário Fonseca, Mantovani,Hilário Cuquetto, Bayão,Geraldo Fábio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Zootecnia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500025
Resumo: The objective of this work was to evaluate the in vitro degradation dynamics of neutral detergent fiber (NDF) of high-quality tropical forage according to supplementation with different nitrogenous compounds sources. A signal grass sample harvested during rainy season was used as basal forage. Casein was used as true protein source and urea:ammonium sulfate (U:AS, 9:1) mixture (urea) as non-protein nitrogen source. The first three supplements were the addition of 0.5, 1.0 and 2.0 mg of casein per mL of final incubation solution. The urea was added to the same amount of protein supplied by equivalent levels 0.5, 1.0 and 2.0 mg/mL of casein. In total, seven treatments were evaluated, including a control (only grass). The supplements were evaluated in a simulated rumen environment by in vitro incubation, and submitted to different incubation times: 0, 3, 6, 9, 12, 24, 36, 48, 72, and 96 hours. The procedure was repeated four times, making a total of four evaluations per incubation time for each treatment. The incubation residues were evaluated for NDF contents and interpreted through a non-linear logistic model. Casein supplementation of 0.5 mg/mL increased the degradation rate of potentially digestible NDF (kpdNDF) by 1.1%. The addition of 1.0 and 2.0 mg/mL of casein provided an inhibitory effect on the estimates of this parameter in comparison to the control (-6.4 and -9.1% respectively). Moreover, the addition of urea, regardless the supplementation level, increased kpdNDF around 7.6%. The ammonia nitrogen (AN) concentration in the medium was increased by supplementation. However, supplementation with urea, even based on the same crude protein levels used with the supplementation with casein, has given higher ammonia nitrogen values in the incubation medium.
id SBZ-1_5fcf179651e43dd8b98449d6960c00fc
oai_identifier_str oai:scielo:S1516-35982009000500025
network_acronym_str SBZ-1
network_name_str Revista Brasileira de Zootecnia (Online)
repository_id_str
spelling In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compoundsammonia nitrogencaseinsignal grasssupplementureaThe objective of this work was to evaluate the in vitro degradation dynamics of neutral detergent fiber (NDF) of high-quality tropical forage according to supplementation with different nitrogenous compounds sources. A signal grass sample harvested during rainy season was used as basal forage. Casein was used as true protein source and urea:ammonium sulfate (U:AS, 9:1) mixture (urea) as non-protein nitrogen source. The first three supplements were the addition of 0.5, 1.0 and 2.0 mg of casein per mL of final incubation solution. The urea was added to the same amount of protein supplied by equivalent levels 0.5, 1.0 and 2.0 mg/mL of casein. In total, seven treatments were evaluated, including a control (only grass). The supplements were evaluated in a simulated rumen environment by in vitro incubation, and submitted to different incubation times: 0, 3, 6, 9, 12, 24, 36, 48, 72, and 96 hours. The procedure was repeated four times, making a total of four evaluations per incubation time for each treatment. The incubation residues were evaluated for NDF contents and interpreted through a non-linear logistic model. Casein supplementation of 0.5 mg/mL increased the degradation rate of potentially digestible NDF (kpdNDF) by 1.1%. The addition of 1.0 and 2.0 mg/mL of casein provided an inhibitory effect on the estimates of this parameter in comparison to the control (-6.4 and -9.1% respectively). Moreover, the addition of urea, regardless the supplementation level, increased kpdNDF around 7.6%. The ammonia nitrogen (AN) concentration in the medium was increased by supplementation. However, supplementation with urea, even based on the same crude protein levels used with the supplementation with casein, has given higher ammonia nitrogen values in the incubation medium.Sociedade Brasileira de Zootecnia2009-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500025Revista Brasileira de Zootecnia v.38 n.5 2009reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982009000500025info:eu-repo/semantics/openAccessZorzi,KarinaDetmann,EdenioQueiroz,Augusto César dePaulino,Mário FonsecaMantovani,Hilário CuquettoBayão,Geraldo Fábioeng2009-06-18T00:00:00Zoai:scielo:S1516-35982009000500025Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2009-06-18T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false
dc.title.none.fl_str_mv In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds
title In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds
spellingShingle In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds
Zorzi,Karina
ammonia nitrogen
casein
signal grass
supplement
urea
title_short In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds
title_full In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds
title_fullStr In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds
title_full_unstemmed In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds
title_sort In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds
author Zorzi,Karina
author_facet Zorzi,Karina
Detmann,Edenio
Queiroz,Augusto César de
Paulino,Mário Fonseca
Mantovani,Hilário Cuquetto
Bayão,Geraldo Fábio
author_role author
author2 Detmann,Edenio
Queiroz,Augusto César de
Paulino,Mário Fonseca
Mantovani,Hilário Cuquetto
Bayão,Geraldo Fábio
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Zorzi,Karina
Detmann,Edenio
Queiroz,Augusto César de
Paulino,Mário Fonseca
Mantovani,Hilário Cuquetto
Bayão,Geraldo Fábio
dc.subject.por.fl_str_mv ammonia nitrogen
casein
signal grass
supplement
urea
topic ammonia nitrogen
casein
signal grass
supplement
urea
description The objective of this work was to evaluate the in vitro degradation dynamics of neutral detergent fiber (NDF) of high-quality tropical forage according to supplementation with different nitrogenous compounds sources. A signal grass sample harvested during rainy season was used as basal forage. Casein was used as true protein source and urea:ammonium sulfate (U:AS, 9:1) mixture (urea) as non-protein nitrogen source. The first three supplements were the addition of 0.5, 1.0 and 2.0 mg of casein per mL of final incubation solution. The urea was added to the same amount of protein supplied by equivalent levels 0.5, 1.0 and 2.0 mg/mL of casein. In total, seven treatments were evaluated, including a control (only grass). The supplements were evaluated in a simulated rumen environment by in vitro incubation, and submitted to different incubation times: 0, 3, 6, 9, 12, 24, 36, 48, 72, and 96 hours. The procedure was repeated four times, making a total of four evaluations per incubation time for each treatment. The incubation residues were evaluated for NDF contents and interpreted through a non-linear logistic model. Casein supplementation of 0.5 mg/mL increased the degradation rate of potentially digestible NDF (kpdNDF) by 1.1%. The addition of 1.0 and 2.0 mg/mL of casein provided an inhibitory effect on the estimates of this parameter in comparison to the control (-6.4 and -9.1% respectively). Moreover, the addition of urea, regardless the supplementation level, increased kpdNDF around 7.6%. The ammonia nitrogen (AN) concentration in the medium was increased by supplementation. However, supplementation with urea, even based on the same crude protein levels used with the supplementation with casein, has given higher ammonia nitrogen values in the incubation medium.
publishDate 2009
dc.date.none.fl_str_mv 2009-05-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500025
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500025
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-35982009000500025
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
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 v.38 n.5 2009
reponame:Revista Brasileira de Zootecnia (Online)
instname:Sociedade Brasileira de Zootecnia (SBZ)
instacron:SBZ
instname_str Sociedade Brasileira de Zootecnia (SBZ)
instacron_str SBZ
institution SBZ
reponame_str Revista Brasileira de Zootecnia (Online)
collection Revista Brasileira de Zootecnia (Online)
repository.name.fl_str_mv Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)
repository.mail.fl_str_mv ||bz@sbz.org.br|| secretariarbz@sbz.org.br
_version_ 1750318144255164416