Estudo da curva de crescimento de ovinos Santa Ines
By J. Sarmento, A. J. Regazzi, W. H. Sousa, R. A. Torres, F. Breda, G. Menezes. 2006
123 citations recorded by the source corpus.
Records of 7,271 weights of 952 lambs measured from birth up to 196 days of age between 1983 and 2000, available from the Agricultural Research Corporation of Paraiba database, were used to model the average growth curve of Santa Ines sheep. The influence of environmental effects on the estimated parameters of the Brody, Von Bertalanffy, Logistic, Gompertz and Richards functions was evaluated using the NLIN procedure of SAS. The growth curve was well fitted by all models but larger residual variation was obtained by the Brody and Logistic models. According to the absolute average residual error, the Gompertz model showed a better fit than the models Von Bertalanffy and Richards. Growth curves differed for males and females, born from single and twin lambing. Contemporary group, type of birth and sex significantly affected the estimation of parameters A and K. The correlation between parameters A and K was negative. Improvements in feeding management and forage storage may decrease the indirect effects of climate and contribute to reduce variation in the growth curves.
Subfields: Animal Science and Zoology, Environmental Chemistry, Genetics
View Paper: https://www.semanticscholar.org/paper/150dc9a31f0d6da6661875dd94e6cb7b855d1af3
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Citations in the corpus
- Estimation of growth curve parameters in Beetal goats (2011, methodology): “These curves have been used to estimate mature body weight and increase in liveweight in goat and sheep by many research workers (Kor et al. 2006, Jenkins & Leymaster 1993, Nasholm & Danell 1990, Nasholm 1990, Salah et al. 1988, Moore 1986).”
- Comparison of Mathematical Models for Describing the Growth of Baluchi Sheep (2014, background): “Sarmento et al. (2006) pointed out that the decrease in the AGR might result from improper management practices that fail to match the increasing nutritional demands as long as the animals grow.”
- Comparison of non-linear growth models to describe the growth curve of Mehraban sheep (2018, result): “Sarmento et al. (2006) observed that the Gompertz function presented the best adjustment when compared to the other models in studies of growth curves of Santa Inês sheep flocks in the state of Paraíba, Brazil.”