Crude glycerin in diets in feedlot wethers. Centesimal composition and fatty acids profile of longissimus dorsi

The aim was to evaluate the centesimal composition and fatty acids profile of longissimus dorsi of wethers fed diets with increasing levels (0; 2.65; 5.33 e 8.06% in dry matter) of crude glycerin (CG). Were used 20 crossbred, castrated lambs Dorper x St. Ines, with 24 ± 2.0 kg of weight, housed in individual pens. The experimental design was completely randomized with four treatments and five replications. Diet samples were collected to fatty acids profile analyses. After 84 days of assessment and data collection, the animals were slaughtered. Longissimus dorsi samples were collected and frozen for subsequent analysis of fatty acids by gas chromatography. There was no effect of treatments on the ash content and protein, however, there was influence (P0.05) by increasing levels of crude glycerin in the diet. There was decreased linear effect (P