Performance, beef quality and expression of lipogenic genes in young bulls fed low-fat dried distillers grains

Author(s)

Reis, Viviane Amin ^[1] ; Reis, Ricardo Andrade ^[2] ; Da Ros de Araujo, Tiago Luis ^[2] ; Lage, Josiane Fonseca ^[3] ; Teixeira, Priscilla Dutra ^[1] ; Santos Gionbelli, Tathyane Ramalho ^[1] ; Lanna, Dante Pazzanese ^[4] ; Ladeira, Marcio Machado ^[1]

Affiliation

^[1] Univ Fed Lavras, Dept Anim Sci, BR-37200000 Lavras, MG - Brazil

^[2] Univ Estadual Paulista, Dept Anim Sci, BR-14884900 Jaboticabal, SP - Brazil

^[3] Trouw Nutr, BR-13080650 Campinas, SP - Brazil

^[4] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, BR-13418900 Piracicaba, SP - Brazil

• Document type: Journal article
• Source: MEAT SCIENCE; v. 160, FEB 2020.
• Web of Science Citations: 0

Abstract

Two studies were carried out, the first with the objective to evaluate performance, beef quality and expression of genes involved in lipid metabolism in the muscle of bulls fed with or without low-fat dried distillers grains with solubles (DDGS, 21% DM) in the diet. In the second, eight rumen-fistulated bulls were assigned in a switch back design to evaluate the fatty acid profile of omasal fluid. We hypothesized that bulls fed DDGS may have an improved fatty acid profile and expression of genes involved in lipid metabolism may be altered, without affecting performance. Bulls fed DDGS had greater (P < .05) concentrations of PUFA n-6 in the omasum and muscle. CLA t10, c12 content was higher and there was lower expression of the LPL gene (P = .05) in the muscle of animals fed DDGS (P = .03). In conclusion, DDGS can be used as a protein feedstuff because it maintains beef quality. (AU)

• FAPESP's process: 15/16631-5 - Management strategies to reduce environmental impacts of beef cattle production systems
• Grantee: Ricardo Andrade Reis
• Support Opportunities: Research Program on Global Climate Change - Thematic Grants