Influência da inclusão de glicerina em substituição ao farelo de mesocarpo de babaçu e milheto na qualidade da carne bovina

• Autor(a) principal: Souza, Maria Izabel Amaral
• Data de Publicação: 2019
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/9463
• topic: Ácidos graxos; Colágeno; Índice de fragmentação miofibrilar; Minerais; Collagen; Fatty acids; Minerals; Myofibrillar fragmentation index; CIENCIA E TECNOLOGIA DE ALIMENTOS::CIENCIA DE ALIMENTOS

The aim of this study was to evaluate the quality of the meat by means of the composition analysis, myofibrillar fragmentation index, collagen, color, vitamin E, cholesterol, lipid oxidation, minerals and fatty acid profile of samples of Longissimus dorsi obtained from non- castrated crossbred cattle with an average age of 30 months, feeding with increasing levels of crude glycerin 0, 60, 120 and 240 g / kg, replacing the grain association of millet and babassu mesocarp bran in the dry matter of concentrated diet. A completely randomized experimental design was used with four treatments and six replicates. The data obtained were submitted to linear regression analysis through the R program. Composition analyzes, myofibrillar fragmentation index, collagen did not show significant difference (P <0.05) with the addition of crude glycerin to the diet. The a*, chroma index, lipid oxidation and vitamin E presented positive linear regression with the inclusion of crude glycerin (P <0.05). The values ​​of K (P <0.05) decreased with the addition of crude glycerin, but being normal variations for beef. Saturated and unsaturated fatty acids levels did not show a significant difference between the evaluated treatments. Monounsaturated fatty acids increased while the polyinsatured fatty acids level decrease. Crude glycerin can be used in cattle, because it favored vitamin E level, improved the n6: n3 ratio and did not increase the amount of cholesterolemic fatty acids.