Correlation between consumption and deposition of fatty acids in cattle supplemented with low purity glycerin in pastures

Abstract

The objective was to determine the existing linear correlation between the consumed fatty acids and deposited in the muscle Longissimus dorsi 35 uncastrated male bovine animals, crossbred Nellore predominance, with average weight of 428.0 ± 32.11 kg, ending in Brachiaria decumbens cv. Basilisk. The experimental design was completely randomized with five diets and seven animals for 74 days. Diets consisted of glycerin inclusion levels (0, 3, 6, 9 and 12%) in the dry matter (DM). The animals were weighed every 28 days to assess the weight gain (ADG) and adjusts the diets. Samples of Brachiaria decumbens, supplements, and Longissimus dorsi were analyzed for evaluation of fatty acid profile. The correlation was performed by estimating the coefficients of linear correlation. The observed correlation profile of the modified meat fatty acid with a reduced concentration of monounsaturated fatty acids and increasing the concentration of fatty acids of the ? series - 6 as well as the ratio between the fatty acids of the series ? - and ? 6 - 3. No correlations were found with hipercolesterêmicos fatty acids ( lauric , myristic and palmitic ) of bovine muscle supplemented with low purity glycerin.

Keywords

• Biodiesel
• Bovinos de corte
• Glicerol
• Lipídios
• Pasto.