Simulation model for particle dynamics in rumen of cattle fed sugarcane diet
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200002 |
Resumo: | Animal simulation models are sets of equations used to describe biological processes. A non-steady state simulation model of cattle digestion is presented in order to represent nutrient availability as a response to feed intake pattern and the kinetics of particle size reduction. Variables representing the particle size reduction and discontinuous voluntary feed intake were included in a mechanistic model created to optimize the supplementation of sugarcane based diets. In general the predicted values were very close to observed values for fibre and nitrogen flows. The model has not shown consistent bias in relation to the behavior of the observed data of duodenal flow of neutral detergent fiber and non-ammonia nitrogen. Milk production simulations were quite close to actual values. Predictions were improved by the non steady-state model, taking into account variable intake rate in relation to the previous steady-state model. The model can be used to select strategies for supplementation of cattle fed sugarcane based diets. |
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oai:scielo:S0103-90162005000200002 |
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Scientia Agrícola (Online) |
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spelling |
Simulation model for particle dynamics in rumen of cattle fed sugarcane dietdairy cowsmilk productionmodelingrumenAnimal simulation models are sets of equations used to describe biological processes. A non-steady state simulation model of cattle digestion is presented in order to represent nutrient availability as a response to feed intake pattern and the kinetics of particle size reduction. Variables representing the particle size reduction and discontinuous voluntary feed intake were included in a mechanistic model created to optimize the supplementation of sugarcane based diets. In general the predicted values were very close to observed values for fibre and nitrogen flows. The model has not shown consistent bias in relation to the behavior of the observed data of duodenal flow of neutral detergent fiber and non-ammonia nitrogen. Milk production simulations were quite close to actual values. Predictions were improved by the non steady-state model, taking into account variable intake rate in relation to the previous steady-state model. The model can be used to select strategies for supplementation of cattle fed sugarcane based diets.Escola Superior de Agricultura "Luiz de Queiroz"2005-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200002Scientia Agricola v.62 n.2 2005reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162005000200002info:eu-repo/semantics/openAccessCollao-Saenz,Edgar AlainDijkstra,JanPaiva,Paulo César de AguiarBannink,AndréArcuri,Pedro BragaTeixeira,Júlio CésarOlalquiaga Pérez,Juan RamónDavid,Flávia Mariaeng2005-04-08T00:00:00Zoai:scielo:S0103-90162005000200002Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2005-04-08T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Simulation model for particle dynamics in rumen of cattle fed sugarcane diet |
title |
Simulation model for particle dynamics in rumen of cattle fed sugarcane diet |
spellingShingle |
Simulation model for particle dynamics in rumen of cattle fed sugarcane diet Collao-Saenz,Edgar Alain dairy cows milk production modeling rumen |
title_short |
Simulation model for particle dynamics in rumen of cattle fed sugarcane diet |
title_full |
Simulation model for particle dynamics in rumen of cattle fed sugarcane diet |
title_fullStr |
Simulation model for particle dynamics in rumen of cattle fed sugarcane diet |
title_full_unstemmed |
Simulation model for particle dynamics in rumen of cattle fed sugarcane diet |
title_sort |
Simulation model for particle dynamics in rumen of cattle fed sugarcane diet |
author |
Collao-Saenz,Edgar Alain |
author_facet |
Collao-Saenz,Edgar Alain Dijkstra,Jan Paiva,Paulo César de Aguiar Bannink,André Arcuri,Pedro Braga Teixeira,Júlio César Olalquiaga Pérez,Juan Ramón David,Flávia Maria |
author_role |
author |
author2 |
Dijkstra,Jan Paiva,Paulo César de Aguiar Bannink,André Arcuri,Pedro Braga Teixeira,Júlio César Olalquiaga Pérez,Juan Ramón David,Flávia Maria |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Collao-Saenz,Edgar Alain Dijkstra,Jan Paiva,Paulo César de Aguiar Bannink,André Arcuri,Pedro Braga Teixeira,Júlio César Olalquiaga Pérez,Juan Ramón David,Flávia Maria |
dc.subject.por.fl_str_mv |
dairy cows milk production modeling rumen |
topic |
dairy cows milk production modeling rumen |
description |
Animal simulation models are sets of equations used to describe biological processes. A non-steady state simulation model of cattle digestion is presented in order to represent nutrient availability as a response to feed intake pattern and the kinetics of particle size reduction. Variables representing the particle size reduction and discontinuous voluntary feed intake were included in a mechanistic model created to optimize the supplementation of sugarcane based diets. In general the predicted values were very close to observed values for fibre and nitrogen flows. The model has not shown consistent bias in relation to the behavior of the observed data of duodenal flow of neutral detergent fiber and non-ammonia nitrogen. Milk production simulations were quite close to actual values. Predictions were improved by the non steady-state model, taking into account variable intake rate in relation to the previous steady-state model. The model can be used to select strategies for supplementation of cattle fed sugarcane based diets. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-04-01 |
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=S0103-90162005000200002 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162005000200002 |
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 |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.62 n.2 2005 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1748936459677597696 |