Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação

Detalhes bibliográficos
Autor(a) principal: Berchielli, Telma Teresinha [UNESP]
Data de Publicação: 2001
Outros Autores: Soares, João Paulo Guimarães [UNESP], Aroeira, Luiz Januário Magalhães, Furlan, Cláudia Lopes [UNESP], Salman, Ana Karina Dias [UNESP], Da Silveira, Roselene Nunes [UNESP], Malheiros, Euclides Braga [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/231727
Resumo: Dry matter intake (DMI) of coastcross bermudagrass grazing by crossbred Holstein-Zebu and Zebu lactating cows was calculated using in vitro dry matter digestibility from extrusa (four esophageal fistulated cows) and fecal output estimate with mordent chromium by the non linear model. Pasture was managed in a rotational system with three days of occupation and 27 days of resting period, adopting a stocking rate of 1.6 and 3.2 cows/ha respectively during the dry and rainy season. Four different equations based on ruminal degradation were used to predict dry matter intake: DMI = -1.19 + 0.035 (a+ b) + 28.5c (I), DMI = -0.822 + 0.0748 (a+ b) + 40.7c (2), DMI = -8.286 + 0.266a + 0.102b +17.696c (3) and DMI = [%FDN na MS]* [FDN intake] / [(1-a-b)/Kp+b/(c+ kp)]/24] (4). The coast-cross DMI predicted by the equations were different from results obtained with the model (6.3 kg of dry matter/cow/day). The data achieved using the equations 1 and 2(12.2 and 12.7 kg/cow/day respectively) were similar and superior from results obtained by equation 4 (7.8 kg/ cow/day). Those values overestimated the results obtained using mordent chromium. The data obtained by equation 3 (5.5 kg/cow/day) was lower than those determined by equations and underestimated the DMI calculated with external marker. The prediction of dry matter intake from cows grazing tropical forages using equations based in ruminai degradation parameters constitutes an important potential for those evaluations, but it should be still studied before being employed in practice.
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spelling Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em LactaçãoPrediction of Dry Matter Intake Based on Ruminal Degradation from Milking Cows Grazing Coastcross BermudagrassDegradabilityIntakeMordanted chromiumPrediction equationsTropical foragesDry matter intake (DMI) of coastcross bermudagrass grazing by crossbred Holstein-Zebu and Zebu lactating cows was calculated using in vitro dry matter digestibility from extrusa (four esophageal fistulated cows) and fecal output estimate with mordent chromium by the non linear model. Pasture was managed in a rotational system with three days of occupation and 27 days of resting period, adopting a stocking rate of 1.6 and 3.2 cows/ha respectively during the dry and rainy season. Four different equations based on ruminal degradation were used to predict dry matter intake: DMI = -1.19 + 0.035 (a+ b) + 28.5c (I), DMI = -0.822 + 0.0748 (a+ b) + 40.7c (2), DMI = -8.286 + 0.266a + 0.102b +17.696c (3) and DMI = [%FDN na MS]* [FDN intake] / [(1-a-b)/Kp+b/(c+ kp)]/24] (4). The coast-cross DMI predicted by the equations were different from results obtained with the model (6.3 kg of dry matter/cow/day). The data achieved using the equations 1 and 2(12.2 and 12.7 kg/cow/day respectively) were similar and superior from results obtained by equation 4 (7.8 kg/ cow/day). Those values overestimated the results obtained using mordent chromium. The data obtained by equation 3 (5.5 kg/cow/day) was lower than those determined by equations and underestimated the DMI calculated with external marker. The prediction of dry matter intake from cows grazing tropical forages using equations based in ruminai degradation parameters constitutes an important potential for those evaluations, but it should be still studied before being employed in practice.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Depto. da FCAV/UNESP, JaboticabalAluno de Pos-graduacao da FCAV/UNESP, Jaboticabal, SPEMBRAPA - Gado de LeitePesquisador do CNPqDepto. da FCAV/UNESP, JaboticabalAluno de Pos-graduacao da FCAV/UNESP, Jaboticabal, SPUniversidade Estadual Paulista (UNESP)Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Pesquisador do CNPqBerchielli, Telma Teresinha [UNESP]Soares, João Paulo Guimarães [UNESP]Aroeira, Luiz Januário MagalhãesFurlan, Cláudia Lopes [UNESP]Salman, Ana Karina Dias [UNESP]Da Silveira, Roselene Nunes [UNESP]Malheiros, Euclides Braga [UNESP]2022-04-29T08:47:14Z2022-04-29T08:47:14Z2001-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1332-1339Revista Brasileira de Zootecnia, v. 30, n. 4, p. 1332-1339, 2001.0100-4859http://hdl.handle.net/11449/2317272-s2.0-0345772963Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Zootecniainfo:eu-repo/semantics/openAccess2024-06-07T18:42:21Zoai:repositorio.unesp.br:11449/231727Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:50:32.914199Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação
Prediction of Dry Matter Intake Based on Ruminal Degradation from Milking Cows Grazing Coastcross Bermudagrass
title Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação
spellingShingle Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação
Berchielli, Telma Teresinha [UNESP]
Degradability
Intake
Mordanted chromium
Prediction equations
Tropical forages
title_short Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação
title_full Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação
title_fullStr Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação
title_full_unstemmed Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação
title_sort Estimativa da Ingestão Voluntária a partir das Características de Degradação do Capim-Coastcross (Cynodon dactylon L. Pers.), sob pastejo, por Vacas em Lactação
author Berchielli, Telma Teresinha [UNESP]
author_facet Berchielli, Telma Teresinha [UNESP]
Soares, João Paulo Guimarães [UNESP]
Aroeira, Luiz Januário Magalhães
Furlan, Cláudia Lopes [UNESP]
Salman, Ana Karina Dias [UNESP]
Da Silveira, Roselene Nunes [UNESP]
Malheiros, Euclides Braga [UNESP]
author_role author
author2 Soares, João Paulo Guimarães [UNESP]
Aroeira, Luiz Januário Magalhães
Furlan, Cláudia Lopes [UNESP]
Salman, Ana Karina Dias [UNESP]
Da Silveira, Roselene Nunes [UNESP]
Malheiros, Euclides Braga [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Pesquisador do CNPq
dc.contributor.author.fl_str_mv Berchielli, Telma Teresinha [UNESP]
Soares, João Paulo Guimarães [UNESP]
Aroeira, Luiz Januário Magalhães
Furlan, Cláudia Lopes [UNESP]
Salman, Ana Karina Dias [UNESP]
Da Silveira, Roselene Nunes [UNESP]
Malheiros, Euclides Braga [UNESP]
dc.subject.por.fl_str_mv Degradability
Intake
Mordanted chromium
Prediction equations
Tropical forages
topic Degradability
Intake
Mordanted chromium
Prediction equations
Tropical forages
description Dry matter intake (DMI) of coastcross bermudagrass grazing by crossbred Holstein-Zebu and Zebu lactating cows was calculated using in vitro dry matter digestibility from extrusa (four esophageal fistulated cows) and fecal output estimate with mordent chromium by the non linear model. Pasture was managed in a rotational system with three days of occupation and 27 days of resting period, adopting a stocking rate of 1.6 and 3.2 cows/ha respectively during the dry and rainy season. Four different equations based on ruminal degradation were used to predict dry matter intake: DMI = -1.19 + 0.035 (a+ b) + 28.5c (I), DMI = -0.822 + 0.0748 (a+ b) + 40.7c (2), DMI = -8.286 + 0.266a + 0.102b +17.696c (3) and DMI = [%FDN na MS]* [FDN intake] / [(1-a-b)/Kp+b/(c+ kp)]/24] (4). The coast-cross DMI predicted by the equations were different from results obtained with the model (6.3 kg of dry matter/cow/day). The data achieved using the equations 1 and 2(12.2 and 12.7 kg/cow/day respectively) were similar and superior from results obtained by equation 4 (7.8 kg/ cow/day). Those values overestimated the results obtained using mordent chromium. The data obtained by equation 3 (5.5 kg/cow/day) was lower than those determined by equations and underestimated the DMI calculated with external marker. The prediction of dry matter intake from cows grazing tropical forages using equations based in ruminai degradation parameters constitutes an important potential for those evaluations, but it should be still studied before being employed in practice.
publishDate 2001
dc.date.none.fl_str_mv 2001-07-01
2022-04-29T08:47:14Z
2022-04-29T08:47:14Z
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 Revista Brasileira de Zootecnia, v. 30, n. 4, p. 1332-1339, 2001.
0100-4859
http://hdl.handle.net/11449/231727
2-s2.0-0345772963
identifier_str_mv Revista Brasileira de Zootecnia, v. 30, n. 4, p. 1332-1339, 2001.
0100-4859
2-s2.0-0345772963
url http://hdl.handle.net/11449/231727
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Revista Brasileira de Zootecnia
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1332-1339
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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