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| Tamioso,Priscilla Regina; Alberti Filho,Jaime Luiz; Dias,Laila Talarico; Teixeira,Rodrigo de Almeida. |
| The study aimed to estimate the components of (co)variance and heritability for weights at birth (BW), weaning (WW) and 180 days of age (W180), as well as the average daily gains from birth to weaning (ADG1), birth to 180 days of age (ADG2) and weaning to 180 days of age (ADG3) in Suffolk sheep. Thus, three different single-trait animal models were fitted, considering the direct additive genetic effect (Model 1), the direct additive genetic and maternal permanent environmental effects (Model 2), and in Model 3, in addition to those in Model 2, the maternal additive genetic effect was included. After comparing models through the likelihood ratio test (LRT), model 3 was chosen as the most appropriate to estimate heritability for BW, WW and ADG1. Model 2 was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Average daily weight gain; Body weight; Heritability; Maternal effects; Suffolk. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001200016 |
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| Tamioso,Priscilla Regina; Dias,Laila Talarico; Teixeira,Rodrigo de Almeida; Nascimento,Bárbara Mazetti; Silva,Gisele Ferreira da; Portes,Juliana Varchaki. |
| Objetivou-se estimar as correlações fenotípicas (r) entre os escores comportamentais de reatividade aplicados durante e após a pesagem e os ganhos médios diários de peso (GMD) de cordeiros cruzados Suffolk x Île-de-France, aos 30, 60 e 90 dias de idade, bem como estudar o efeito da habituação dos animais ao manejo. As variáveis avaliadas por meio de escores foram: interferência do avaliador para o animal entrar na balança (INT), vocalização (VOC), movimentação (MOV), tensão (TEN), movimentos exploratórios (ME), postura de orelhas (ORE) e o teste de tipos de marcha (TM). Os resultados das correlações de Spearman obtidos entre os escores indicam que VOC, MOV e TEN podem ser consideradas como características importantes na expressão da reatividade de ovinos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Correlação fenotípica; Escores de temperamento; Ganho médio de peso; Manejo; Ovinos. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014001202258 |
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| Tamioso,Priscilla Regina; Cosmo,Tiago Rafael; Pimentel,Concepta Margaret McManus; Dias,Laila Talarico; Teixeira,Rodrigo de Almeida. |
| The aim of this study was to estimate the heritability for weight and height at withers of 260-780 days of age No Defined Breed (NDB) horses, at intervals of 40 days, which belong to the Brazilian Army cavalry. Thus, the model considered the direct genetic effects as random ones, as fixed, the effects of sex and year of birth and the linear effects of height at withers and age, as covariates for the analysis of body weight, whereas for the analysis of height, the linear effect of weight was included as a covariate. For the complete data, the estimated heritability coefficients were 0.40±0.034 and 0.70±0.019 for weight and height at withers, respectively, indicating that individual selection for these traits may be effective. On the other hand, for the data... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cavalry; Growth traits; Selection. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012001200023 |
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