Estruturas de co-variância residuais para análise de medidas repetidas do peso de ovinos deslanados castrados e inteiros

• Ano de defesa: 2011
• Autor(a) principal: Barros, Alexsandro de Araújo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Alagoas; BR; Programa de Pós-Graduação em Zootecnia; UFAL
• Palavras-chave em Português: Heterogeneity of variance; Correlated residues; Santa Inês; Sheep; Heterogeneidade de variâncias; Resíduos correlacionados; Ovinos; CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
• Link de acesso: http://repositorio.ufal.br/handle/riufal/1138

The achievement of this research aimed to analyze the (co)variance s structures with better representation of the variation weight s sheep, measured in three ages, in two distinct groups: castrated and intact. 120 weights in 40 male sheep were used with a predominance of genotype Santa Ines, in semi-extensive system, in the period from January to May 2006, in Major Isidoro, inserted in the middle region of the Alagoas s semi-árido. Weights were taken at 150, 180 and 210 days old. The results indicated that the best structures residual variances were the Not Structured (UN) and First Order Factor Analytic (FA (1)). The mean weights between the castrated and intact animals, within each period, no significant differences by Tukey test (P<0.001).