TY - JOUR
T1 - A model for evaluating beef cattle rations considering effects of ruminal fiber mass
AU - Henrique, Douglas Sampaio
AU - de Paula Lana, Rogério
AU - Vieira, Ricardo Augusto Mendonça
AU - de Alencar Fontes, Carlos Augusto
AU - Botelho, Mosar Faria
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - Modeling
KW - Nutrition
KW - Ruminants
UR - http://www.scopus.com/inward/record.url?scp=84856298411&partnerID=8YFLogxK
U2 - 10.1590/S1516-35982011001100036
DO - 10.1590/S1516-35982011001100036
M3 - Journal article
AN - SCOPUS:84856298411
SN - 1516-3598
VL - 40
SP - 2538
EP - 2547
JO - Revista Brasileira de Zootecnia
JF - Revista Brasileira de Zootecnia
IS - 11
ER -