Growth curve in Santa Ines sheep
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
24/10/2013
24/10/2013
2012
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| Resumo |
The objective of this research was to use non-linear models to describe the growth pattern in Santa Ines sheep and to study the influence of environmental effects on curve parameters with the best-fit model. The models included the Brody, Richards, Von Bertalanffy, Gompertz, and Logistic models. We used 773 field reports on 162 animals ranging in age from 120 to 774 days, including 46 males and 116 females. The statistics used to evaluate the quality of fit included RMS (residual mean square), C% (percentage of convergence), R-2 (adjusted determination coefficient) and MAD (mean absolute deviation). Of the fixed effects studied, the only significant relationship was the effect of sex on parameter A. The Richards model was problematic during the process of convergence. Considering all studied criteria, the Logistic model presented the best fit in describing the growth pattern in Santa Ines sheep. (C) 2011 Elsevier B.V. All rights reserved. FAPEAL FAPEAL CAPES CAPES |
| Identificador |
SMALL RUMINANT RESEARCH, AMSTERDAM, v. 105, n. 41334, supl., Part 3, pp. 182-185, JUN, 2012 0921-4488 http://www.producao.usp.br/handle/BDPI/36020 10.1016/j.smallrumres.2011.11.024 |
| Idioma(s) |
eng |
| Publicador |
ELSEVIER SCIENCE BV AMSTERDAM |
| Relação |
SMALL RUMINANT RESEARCH |
| Direitos |
closedAccess Copyright ELSEVIER SCIENCE BV |
| Palavras-Chave | #NON-LINEAR MODELS #HAIR SHEEP #WEIGHT #GROWTH RATE #PARAMETERS #AGRICULTURE, DAIRY & ANIMAL SCIENCE |
| Tipo |
article original article publishedVersion |
