Effect of FASN, SCD, and GH Genes on Carcass Fatness and Fatty Acid Composition of Intramuscular Lipids in F1 Holstein × Beef Breeds

To improve beef quality, a selection of specific breeds for crossbreeding, genotyping, and candidate genes in breeding animals can be some the solutions. The objective this study was to determine effects FASN, SCD, GH on carcass fatness fatty acid (FA) composition intramuscular lipids crossbred Holstein × (Simmental, Belgian Blue, Limousin, Piemontese). allelic genotypic distribution polymorphisms studied 80 crossbreed animals. Genomic DNA isolated from musculus longissimus dorsi, whose chemical determined by near infrared transmittance spectrophotometry, while gas chromatography. polymorphism analyzed restriction fragment length analysis. FASN (g. 17924A>G) significantly associated with C19:1 n-9 C24:1 n-9, whereas (g.2141C>G) C16:0 C20:1 n-9. SCD (g.8586C>T) C16:0, C18:0, C20:0, C14:1 n-5, C16:1, C18:1, C18:2 n-6, C18:3 n-3, C20:2 C20:4 sum ratios acids. Sex had significant effect composition. This provided useful results above their association FA, supporting influence as fats meat.