Immunocastration effect on performance, carcass characteristics and meat quality of feedlot crossbred cattle Angus x Nellore

• Grant number: 14/22709-4
• Support Opportunities: Scholarships in Brazil - Master
• Start date: March 01, 2015
• End date: July 31, 2016
• Field of knowledge: Agronomical Sciences - Animal Husbandry
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Júlio Cesar de Carvalho Balieiro
• Grantee: Lenise Freitas Mueller da Silveira
• Host Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil

Abstract

The goal of this study is to evaluate the influence of sexual condition on performance of quantitative and qualitative characteristics of meat from feedlot crossbred cattle Angus x Nellore. Study groups will be divided on bulls, surgically castrated, immunocastrated and females. A total of 454 animals will be divided into three lots confined and assigned to four treatments, animals used will have an average of initial weight of 265 kg and a mean age of 20 months. The animals were fed ad libitum high-grain diet containing 80% concentrate. Diets will consist of different concentrates such as corn germ, corn grain, fat pie, sunflower meal and soybean meal. At the end of the experimental period (170 days), 160 animals will be slaughtered, based on its performance characteristics. Carcass yield will be calculated, pH and temperature of the carcass 24 hours after slaughter will evaluated. During the fabrication we will perform loin eye area, subcutaneous fat thickness at the 12th rib and marbling grade. Samples will be collected from the Longissimus dorsi muscle to perform analyzes of color, cooking loss, tenderness, fatty acid profile and a content of ether extract. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MUELLER, LENISE FREITAS; CARVALHO BALIEIRO, JULIO CESAR; FERRINHO, ADRIELLE MATIAS; MARTINS, TAIANE DA SILVA; DA SILVA CORTE, ROSANA RUEGGER PEREIRA; DE AMORIM, TAMYRES RODRIGUES; MANGINI FURLAN, JOYCE DE JESUS; BALDI, FERNANDO; CRAVO PEREIRA, ANGELICA SIMONE. Gender status effect on carcass and meat quality traits of feedlot Angus x Nellore cattle. ANIMAL SCIENCE JOURNAL, v. 90, n. 8, p. 1078-1089, AUG 2019. (11/21241-0, 14/22709-4)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SILVEIRA, Lenise Freitas Mueller da. Sexual condition effects on performance, carcass traits and beef quality of feedlot crossbred Angus x Nellore cattle. 2017. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Zootecnica e Engenharia de Alimentos (FZE/BT) Pirassununga.