Data/hora: 13/06/2024 08:21:25

Provedor de dados: | 63
País: | Brazil
Título: | Simulation model for particle dynamics in rumen of cattle fed sugarcane diet
Autores: | 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.
Data: | 2005-04-01
Ano: | 2005
Palavras-chave: | Dairy cows; Milk production; Modeling; Rumen.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200002
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90162005000200002
Formato: | text/html
Fonte: | Scientia Agricola  v.62 n.2 2005
Fonte: | info:eu-repo/semantics/openAccess