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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/13318
Tipo: Artigo de Periódico
Título: Live weight, carcass ultrasound images, and visual scores in Angus cattle under feeding regimes in Brazil
Título(s) alternativo(s): Tropical Animal Health and Production
Autor(es): Pinto, Luis Fernando Batista
Tarouco, Jaime Urdapilleta
Pedrosa, Victor Breno
Jucá, Adriana de Farias
Leão, André Gustavo
Moita, Antonia Kécya França
Autor(es): Pinto, Luis Fernando Batista
Tarouco, Jaime Urdapilleta
Pedrosa, Victor Breno
Jucá, Adriana de Farias
Leão, André Gustavo
Moita, Antonia Kécya França
Abstract: This study aimed to evaluate visual precocity, muscling, conformation, skeletal, and breed scores; live weights at birth, at 205, and at 550 days of age; and, besides, rib eye area and fat thickness between the 12th and 13th ribs obtained by ultrasound. Those traits were evaluated in 1,645 Angus cattle kept in five feeding conditions as follows: supplemented or non-supplemented, grazing native pasture or grazing cultivated pasture, and feedlot. Descriptive statistics, Pearson's correlations, and principal component analysis were carried out. Gender and feeding conditions were fixed effects, while animal's age and mother's weight at weaning were the covariates analyzed. Gender and feeding conditions were very significant for the studied traits, but visual scores were not influenced by gender. Animal's age and mother's weight at weaning influenced many traits and must be appropriately adjusted in the statistical models. An important correlation between visual scores, live weights, and carcass traits obtained by ultrasound was found, which can be analyzed by univariate procedure. However, the multivariate approach revealed some information that cannot be neglected in order to ensure a more detailed assessment.
Palavras-chave: Beef
Bovine
Correlations
Growth
Principal components
Editora / Evento / Instituição: Tropical Animal Health and Production
URI: http://repositorio.ufba.br/ri/handle/ri/13318
Data do documento: 2013
Aparece nas coleções:Artigo Publicado em Periódico (EMV)

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