Data/hora: 10/06/2024 13:56:12

Provedor de dados: | Revista Brasileira de Zootecnia
País: | Brazil
Título: | Traditional and alternative nonlinear models for estimating the growth of Morada Nova sheep
Autores: | Souza,Laaina de Andrade; Carneiro,Paulo Luiz Souza; Malhado,Carlos Henrique Mendes; Silva,Fabyano Fonseca e; Silveira,Fernanda Gomes da.
Data: | 2013-09-01
Ano: | 2013
Palavras-chave: | Cluster analysis; Growth curve; Naturalized breed.
Resumo: | In the present study, alternative and traditional nonlinear models to describe growth curves of Morada Nova sheep reared in the state of Bahia, Brazil, were applied. The nonlinear models were: Schnute, Mitscherlich, Gompertz, Logistic, Meloun I Meloun II, III Meloun, Gamito and Meloun IV. The model adjustment was evaluated by using: Adjusted Coefficient of Determination (R²aj), Akaike Information Criterion (AIC), Bayesian Information Criterion (BIC), Mean Squared Error of Prediction (MEP) and Coefficient of Determination of Prediction (R²p). The selection of the best model was based on cluster analysis, using the evaluators as variables. Six out of the nine tested models converged, while Meloun I and Meloun IV were equally effective in explaining animal growth, without significant influence of sex or type of parturition over the curve parameters. The models Meloun I and IV have the best adjustment and reveal a remarkable reduction of weight gain after 150 days of age, which indicates special attention should be given to feeding at this stage.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900007
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982013000900007
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.42 n.9 2013
Fonte: | info:eu-repo/semantics/openAccess