Metabolomic characterization of meat from young Nellore bulls, progeny of bulls with different EPDS for growth

• Grant number: 16/19441-5
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): December 01, 2016
• Effective date (End): November 30, 2017
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Production
• Principal researcher: Nara Regina Brandão Cônsolo
• Grantee: Amanda Aparecida Padilha Dorta
• Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil

Abstract

The need for improved the animal production and profitability has generated great search for technologies that provide better results for producers and industry. In this sense, in order to improve beef efficiency production, genetic selection tools, such as expected progeny differences (EPDs), has shown as a good alternative to improve economic traits in the herd, increasing the animal performance, and meat production, improving the system production. Therefore, the aim of this study is to analyze the blood metabolites profile from young bulls Nellore, progeny of bulls selected for high and low EPDs for animal growth, aimed a better understanding of muscle metabolism and try to identify the metabolites responsible for the animal growth. Ninety-six young bulls, 14 month old and 350kg of body weight will be used. The animals are from commercial herd that use genetic selection, and will separated into the following groups: high and low EPDs form animal growth, with 24 animals per group. The animals will be housed during 100 days and they will be fed with the diet. The performance will be evaluate with periodic weighing. For metabolomics profile, Longissimus muscle samples will be taken after 24 hours postmortem. The samples will be prepared and the meat metabolites will be identify and quantify by nuclear resonance magnetic (RMN). (AU)