title: Glycerine levels in the diets of crossbred bulls finished in feedlot: carcass characteristics and meat quality.
abstract: The effects of corn replacement by different glycerine levels on carcass characteristics and meat quality of 40 young Purunã bulls, weighing 209 ± 33.3 kg and 8 ± 0.9 months old, finished in feedlot, were evaluated. The treatments were G00: without glycerine; G06: 6% glycerine; G12: 12% glycerine; and G18: 18% glycerine in the diets, on a DM basis. Hot weight, dressing, conformation and length carcass, leg length and cushion thickness were not (P>0.05) modified by different glycerine levels in the diets. Glycerine in the diets did not (P>0.05) affect fat thickness, Longissimus muscle area, marbling and texture. Muscle, fat and bone percentages were not (P>0.05) influenced by glycerine levels in the diets. No changes (P>0.05) in lightness (L*), redness (a*) and yellowness (b*) on LM occurred when glycerine was included at 0, 6, 12 or 18% in the diet. There was no (P>0.05) difference in LM moisture, ash, crude protein and total lipids when feeding different glycerine levels. The inclusion of glycerine decreased (P<0.01) total saturated (10.8%), and increased monounsaturated (7.4%) and poly-unsaturated (44.0%) fatty acids, which resulted in a higher PUFA:SFA ratio (0.57).
authors.affiliation: Federal University Recôncavo of Bahia, Fellowship of CAPES, Brazil.
authors.forename: Carlos Emanuel
authors.initials: CE
authors.lastname: Eiras
authors.forename: Jair de Araújo
authors.initials: Jde A
authors.lastname: Marques
authors.forename: Rodolpho Martin do
authors.initials: RM
authors.lastname: Prado
authors.forename: Maribel Velandia
authors.initials: MV
authors.lastname: Valero
authors.forename: Elton Guntendorfer
authors.initials: EG
authors.lastname: Bonafé
authors.forename: Fernando
authors.initials: F
authors.lastname: Zawadzki
authors.forename: Daniel
authors.initials: D
authors.lastname: Perotto
authors.forename: Ivanor Nunes do
authors.initials: IN
authors.lastname: Prado
mesh_terms: D000273:Adipose Tissue / Q000737:chemistry; D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002417:Cattle / Q000145:classification; D004032:Diet / Q000662:veterinary*; D005229:Fatty Acids, Monounsaturated / Q000032:analysis; D005231:Fatty Acids, Unsaturated / Q000032:analysis; D063427:Food Quality; D005990:Glycerol / Q000008:administration & dosage* / Q000032:analysis*; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000737:chemistry; D019308:Palmitic Acid / Q000032:analysis; D013229:Stearic Acids / Q000032:analysis; D003313:Zea mays / Q000737:chemistry
chemical_list: D005229:Fatty Acids, Monounsaturated; D005231:Fatty Acids, Unsaturated; D013229:Stearic Acids; D019308:Palmitic Acid; C031183:stearic acid; D005990:Glycerol
keywords: Carcass characteristics; Cattle; Glycerol; Meat quality