Características da carne de bovinos da raça nelore alimentados com feno de braquiária e submetidos a diferentes antioxidantes
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Data
2014-04-30
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Universidade Federal de Goiás
Resumo
The pastures in the Brazilian Midwest are mostly formed by grasses of the genus Brachiaria. It is difficult to improve these pastures due to the large quantity of saponins found in these grasslands, causing poisoning in animals leading to a low level of production or even death. Antioxidants optimize animal production and decrease the effects of saponins on the animal, but also, improves meat appearance and increases its shelf life. To evaluate the effects of supplementation with different antioxidants on performance, oxidative stress, as well as quantitative and qualitative aspects of the carcass in feedlot cattle, an experiment was conducted with 40 Nelore cattle fed Brachiaria hay and subjected to five treatments (control and groups with antioxidants: zinc, selenium, vitamin E and selenium + vitamin E). There were eight animals per group, each animal considered a replication. Tissue composition as well as carcass proximate composition, color, tenderness, pH and fatty acid profile were evaluated. In the present experimental conditions, supplementation of cattle fed Brachiaria brizantha hay and supplemented with antioxidants, did not lead to difference for carcass traits and meat quality. However, supplementation with vitamin E reduced Omega 3 levels in this study.
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Alimentação , Bovinocultura de corte , Confinamento , Saponina , Food , Antioxidants , Beef cattle , Feedlot , Saponins
Citação
CARMO, Thiago de Jesus do. Características da carne de bovinos da raça nelore alimentados com feno de braquiária e submetidos a diferentes antioxidantes. 2014. 68 f. Dissertação (Mestrado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2014.