Theory and development
Article Abstract:
The development of a computer model simulating cattle body composition arising from the nutritional changes during the postweaning period are presented. The model assumes that the proportion of fat gain compared with body weight increases with maturity, that nutritional effects on body composition are predictable and are neither immediate nor permanent, and that there is an equilibrium in body composition when zero body gain is reached. The parameters characterizing the model are discussed.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Evaluation of the model
Article Abstract:
A computer model predicting nutritional effects on cattle body composition is evaluated with respect to its predicition accuracy. Literature data are compared with calculated measures using the model. Analysis showed a close concordance between observed and calculated values measuring cattle fatness. Regression analysis of literature values and the model also revealed positive regression coefficients close to one indicating that the model can predict some nutritional effects on body fat.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Predicting lean growth while accounting for correlated traits
Article Abstract:
A prediction method that incorporates indirect indicators to a prediction equation for lean tissue growth rate (LTGR) is presented. Confining the fat growth rate regression to its retrogradation on real LTGR can be done by estimating genotypic or phenotypic factors that influence the actual growth trait. Indirect measurement of the LTGR requires that significant correlated characteristics be taken into account to effectively quantify traits to be selected for in breeding.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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