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Avaliação do crescimento de codornas de corte utilizando modelos de regressão aleatória
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bonafé, Cristina Moreira |
| Copyright Year | 2008 |
| Abstract | The aim of this work was to compare the residual heterogeneity variance influence on the genetic parameters estimated for the curve of quail meat growth. The data used in this study originated from 26835 and 27447 observations, from 3909 and 4040 quail cuts of the UFV-1 and UFV-2 lineage, respectively, pertaining to the Genetic Improvement of Birds Program at the Federal University of Viçosa. The physical weight was evaluated in the two lineages, at 1, 7, 14, 21, 28, 35 and 42 days of age, through an animal model at random regression. In the modeling there were residual variances considered in the age classes of: CL1: homogeneous; CL2: 1 and 7-42 days; CL3: 1, 7 and 14-42 days; CL4: 1, 7, 14 and 21-42 days; CL5: 1, 7, 14 and 21 and 28-42 days; CL6: 1, 7, 14, 21, 28 and 35-42 days; CL7: 1, 7, 14, 21, 28, 35 and 42 days of age. Loge L showed an increase in itself, significantly (P <0.01), for the likelihood ratio test (LRT), with an increase in the number of heterogeneous classes (CL7). The model that was considered residual variance homogeneity (CL1) appeared unsuitable. The variance estimates, heritability and correlations were influenced by the modeling of the residual variance. The heterogeneity use of residual variance to model the variances associated with the growth curve of quail meat is necessary. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.locus.ufv.br/bitstream/handle/123456789/4682/texto%20completo.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
