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https://locus.ufv.br//handle/123456789/14388
Tipo: | Artigo |
Título: | A model for evaluating beef cattle rations considering effects of ruminal fiber mass |
Autor(es): | Henrique, Douglas Sampaio Lana, Rogério de Paula Vieira, Ricardo Augusto Mendonça Fontes, Carlos Augusto de Alencar Botelho, Mosar Faria |
Abstract: | A mathematical model based on Cornell Net Carbohydrate and Protein System (CNCPS) was developed and adapted in order to evaluate beef cattle rations at tropical climate conditions. The presented system differs from CNCPS in the modeling of insoluble particles' digestion and passage kinetics, which enabled the estimation of fiber mass in rumen and its effects on animal performance. The equations used to estimate metabolizable protein and net energy requirements for gain, net energy requirement for maintenance and total efficiency of metabolizable energy utilization were obtained from scientific articles published in Brazil. The parameters of the regression equations in these papers were estimated using data from Bos indicus purebred and crossbred animals reared under tropical conditions. The model was evaluated by using a 368-piece of information database originally published on 11 Doctoral theses, 14 Master's dissertations and four scientific articles. Outputs of the model can be considered adequate. |
Palavras-chave: | Modeling Nutrition Ruminants |
Editor: | Revista Brasileira de Zootecnia |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1590/S1516-35982011001100036 http://www.locus.ufv.br/handle/123456789/14388 |
Data do documento: | 13-Abr-2011 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
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36.pdf | Texto completo | 713,97 kB | Adobe PDF | Visualizar/Abrir |
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