PSIII-A-13 Intramuscular fat and Expression of Genes Involved in Lipid Metabolism and Gluconeogenesis in Nellore Bulls fed Snaplage

Abstract We hypothesized that diets with snaplage would increase the expression of lipogenic genes, resulting in higher marbling fat content, compared to a diet whole-plant silage and reconstituted corn silage. Therefore, objective this study was analyze chemical composition, as well genes involved lipid metabolism liver gluconeogenesis Nellore bulls fed snaplage. Seventy-two (24 months, initial body weight 400 ±27.4 kg) were used completely randomized design. Animals stratified by weight, housed 24 pens (3 animals per pen), designed one three treatments (8 treatment). Experimental (around 14% crude protein) were: control (corn silage, ground grain, protein sources), + corn, replacing (SNAP65, 65% snaplage), 85, grain (SNAP85, 85% snaplage). Data analyzed using MIXED procedure SAS 9.4 fixed effects dietary treatment, random pen nested within treatment. Overall, did not affect (P>0.11) intramuscular fat. However, SNAP85 showed PPARG (P=0.03). The muscle (SNAP65 SNAP85) also had ACACA SCD1 (P≤0.03) than animals. FABP4 tended be (P=0.10) SNAP65. In addition, have (P=0.07) PC SNAP65 SNAP85. Also, PEPCK2 lower (P=0.05) conclude increased lipogenesis, without