Soybean molasses increases subcutaneous fat deposition while reducing lipid oxidation in the meat of castrated lambs.

Autor:	Pereira-Junior SAG; Department of Animal Science, Agrarian Science and Veterinary College, São Paulo State University 'Unesp', Jaboticabal, SP, Brazil., Costa RV; Department of Animal Science, Agrarian Science and Veterinary College, São Paulo State University 'Unesp', Jaboticabal, SP, Brazil., Rodrigues JL; Department of Animal Science, Agrarian Science and Veterinary College, São Paulo State University 'Unesp', Jaboticabal, SP, Brazil., Torrecilhas JA; Department of Animal Production, Veterinary Medicine and Animal Science College, São Paulo State University 'Unesp', Botucatu, SP, Brazil., Chiaratti MR; Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil., Lanna DPD; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture, University of São Paulo, Piracicaba, SP, Brazil., das Chagas JC; Department of Animal Science, Agrarian Science and Veterinary College, São Paulo State University 'Unesp', Jaboticabal, SP, Brazil., Nociti RP; Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SPBrazil., Meirelles FV; Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SPBrazil., Ferraz JBS; Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SPBrazil., Fernandes MHMR; Department of Animal Science, Agrarian Science and Veterinary College, São Paulo State University 'Unesp', Jaboticabal, SP, Brazil., Almeida MTC; Department of Animal Science, Federal University of Espírito Santo, Vitória, ES, Brazil., Ezequiel JMB; Department of Animal Science, Agrarian Science and Veterinary College, São Paulo State University 'Unesp', Jaboticabal, SP, Brazil.
Jazyk:	angličtina
Zdroj:	Journal of animal science [J Anim Sci] 2024 Jan 03; Vol. 102.
DOI:	10.1093/jas/skae130
Abstrakt:	This study aimed to evaluate the effect of including soybean molasses (SM) on performance, blood parameters, carcass traits, meat quality, fatty acid, and muscle (longissimus thoracis) transcriptomic profiles of castrated lambs. Twenty Dorper × Santa Inês lambs (20.06 ± 0.76 kg body weight [BW]) were assigned to a randomized block design, stratified by BW, with the following treatments: CON: 0 g/kg of SM and SM20: 200 g/kg of SM on dry matter basis, allocated in individual pens. The diet consisted of 840 g/kg concentrate and 160 g/kg corn silage for 76 d, with the first 12 d as an adaptation period and the remaining 64 d on the finishing diet. The SM20 diet increased blood urea concentration (P = 0.03) while reduced glucose concentration (P = 0.04). Lambs fed SM showed higher subcutaneous fat deposition (P = 0.04) and higher subcutaneous adipocyte diameter (P < 0.01), in addition to reduced meat lipid oxidation (P < 0.01). SM reduced the quantity of branched-chain fatty acids in longissimus thoracis (P = 0.05) and increased the quantity of saturated fatty acids (P = 0.01). In the transcriptomic analysis, 294 genes were identified as differentially expressed, which belong to pathways such as oxidative phosphorylation, citric acid cycle, and monosaccharide metabolic process. In conclusion, diet with SM increased carcass fat deposition, reduced lipid oxidation, and changed the energy metabolism, supporting its use in ruminant nutrition. (© The Author(s) 2024. Published by Oxford University Press on behalf of the American Society of Animal Science.)
Databáze:	MEDLINE
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