title: Carcass characteristics and meat quality of lambs fed high concentrations of crude glycerin in low-starch diets.
abstract: In this study, we evaluated the effects of total corn replacement with crude glycerin on carcass characteristics and meat quality of feedlot lambs fed high-concentrate diets with low starch. Forty non-castrated Santa Ines lambs (23.5 ± 3.56 kg BW) were assigned to a randomized complete block design with five dietary treatments: 0%, 7.5%, 15%, 22.5%, or 30% crude glycerin, replacing corn. Animals were slaughtered at a BW of 38 kg after 72 ± 20 days. The addition of up to 30% crude glycerin reduced carcass weight and yield (P ≤ 0.02). Odd-chain fatty acids, oleic, palmitoleic, total unsaturated, and monounsaturated fatty acids were increased (P ≤ 0.01) while CLA tended to increase in glycerin-fed lambs (P = 0.06). Crude glycerin decreased stearic, palmitic, transvaccenic, total saturated fatty acids, and atherogenicity index (P < 0.01). High concentrations of crude glycerin in low-starch diets reduced carcass weights, nevertheless improved meat quality by increasing unsaturated and odd-chain fatty acid contents.
authors: Animal Science Department at Universidade Estadual Paulista Julio de Mesquita Filho (Unesp), Campus Jaboticabal, CEP: 14884-900, Jaboticabal, SP, Brazil. Electronic address: vancarvalho_zoo@hotmail.com.
authors: V B
authors: VB
authors: Carvalho
authors: Animal Science Department at Universidade Estadual Paulista Julio de Mesquita Filho (Unesp), Campus Jaboticabal, CEP: 14884-900, Jaboticabal, SP, Brazil.
authors: R F
authors: RF
authors: Leite
authors: Animal Science Department at Universidade Estadual Paulista Julio de Mesquita Filho (Unesp), Campus Jaboticabal, CEP: 14884-900, Jaboticabal, SP, Brazil.
authors: M T C
authors: MT
authors: Almeida
authors: Animal Science Department at Universidade Estadual Paulista Julio de Mesquita Filho (Unesp), Campus Jaboticabal, CEP: 14884-900, Jaboticabal, SP, Brazil.
authors: J R
authors: JR
authors: Paschoaloto
authors: Animal Science Department at Universidade Federal de Lavras (UFLA), CEP 37200-000, Lavras, MG, Brazil.
authors: E B
authors: EB
authors: Carvalho
authors: Animal Science Department at Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ/USP), Campus Jaboticabal, CEP 13418-900, Piracicaba, SP, Brazil.
authors: D P D
authors: DP
authors: Lanna
authors: Animal Science Department at Universidade Estadual Paulista Julio de Mesquita Filho (Unesp), Campus Jaboticabal, CEP: 14884-900, Jaboticabal, SP, Brazil.
authors: H L
authors: HL
authors: Perez
authors: Animal Science Department at Universidade Estadual Paulista Julio de Mesquita Filho (Unesp), Campus Jaboticabal, CEP: 14884-900, Jaboticabal, SP, Brazil.
authors: E H C B
authors: EH
authors: Van Cleef
authors: Animal Science Department at Universidade Estadual Paulista Julio de Mesquita Filho (Unesp), Campus Jaboticabal, CEP: 14884-900, Jaboticabal, SP, Brazil.
authors: A C
authors: AC
authors: Homem Junior
authors: Animal Science Department at Universidade Estadual Paulista Julio de Mesquita Filho (Unesp), Campus Jaboticabal, CEP: 14884-900, Jaboticabal, SP, Brazil.
authors: J M B
authors: JM
authors: Ezequiel
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D003296:Cooking; D004032:Diet / Q000662:veterinary*; D004305:Dose-Response Relationship, Drug; D005227:Fatty Acids / Q000737:chemistry; D005990:Glycerol / Q000008:administration & dosage* / Q000737:chemistry; D008460:Meat / Q000592:standards*; D033081:Shear Strength; D012756:Sheep; D013213:Starch / Q000008:administration & dosage* / Q000737:chemistry
chemical_list: D005227:Fatty Acids; D013213:Starch; D005990:Glycerol
keywords: Biohydrogenation; Carcass dressing; Corn; Fatty acid profile; Glycerol