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- W3201047502 abstract "Objetivou-se avaliar o uso da estatistica multivariada para identificar grupos de animais com Diferencas Esperadas nas Progenies semelhantes (DEPs) e as principais caracteristicas que descrevem estes animais. Foram utilizadas 7.835 femeas da raca Brahman da marca OB, durante os anos de 1996 a 2012. As DEPs foram estimadas pelo metodo REML. Analises de uni e multivariadas foram realizadas por meio da DEP maternal para peso aos 120 dias de idade, e das DEPs diretas para a idade ao primeiro parto, produtividade acumulada, periodo de gestacao e stayability. Observaram-se diferencas significativas entre as DEPS dos animais dos Clusters (p<0,001) gerados pelo metodo de k-medias. As analises identificaram e agruparam os animais com melhores valorespara as caracteristicas STAY, PAC, IPP e MP120 e identificaram um grupo de animais que apresentou DEPs menos favoraveis. O uso da analise multivariada pode resumir informacoes e ajudar os produtores a tomar decisao, contribuindo para o melhoramento genetico no rebanho, alem de auxiliar no direcionamento de acasalamentos otimizados. Abstract: This study was carried out to evaluate the use of multivariate statistics to identify groups of animals with similar expected progeny differences (EPD) and the main traits that describe these animals. Data were collected from 7,835 Brahman cattle from OB Ranch, between years 1996 and 2012. EPDs were estimated by REML method. Univariate and multivariate analyzes were run using standardized maternal EPDs for body weight at 120 days of age, direct EPDs for age at first calving, accumulated productivity, gestation length and stayability. Significant differences were observed between EPDs of the clusters (p<0.001) generated by k-means method. With these analyses was possible to identify the best cluster for stayability, accumulated productivity, age at first calving and maternal ability. The use of multivariate analysis can summarize information and help farmers make decisions, contributing to genetic improvement in the herd, and assist in targeting breeding objective." @default.
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- W3201047502 date "2014-01-01" @default.
- W3201047502 modified "2023-09-25" @default.
- W3201047502 title "Utilização de análises multivariadas como ferramenta auxiliar a seleção de fêmeas bovinas da raça Brahman para habilidade maternal e características reprodutivas." @default.
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