Performance, carcass traits, meat quality and intramuscular lipogenesis in bulls and steers

• Grant number: 19/11028-0
• Support Opportunities: Regular Research Grants
• Start date: October 01, 2019
• End date: December 31, 2021
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Production
• Principal Investigator: Otávio Rodrigues Machado Neto
• Grantee: Otávio Rodrigues Machado Neto
• Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
• Associated researchers: Marcos Roberto Chiaratti ; Welder Angelo Baldassini

Abstract

The purpose of this trial is evaluate effects of sexual condition (intact or castrated males) on dry matter intake, performance, carcass traits, meat quality, gene expression, mineral and proteomic profile in longissimus muscle of F1 Angus-Nellore cattle finished in feedlot. Six hundred and forty animals will be fed during 180 days. Longissimus thoracis samples will be collected between the 12th and 13th ribs to perform physico-chemical analyses. After slaughter, longissimus muscle will be sampled to proceed gene expression. Steaks with 2.54 cm will be collected to determine shear force, cooking loss, marbling score, colour, chemical composition, mineral profile and fatty acid profile. The expression of lipogenic genes and proteomic profile of muscule will be studied. In addition, the relationships between the variables of dry matter intake, performance, carcass and meat quality, fatty acid profile, mineral profile, gene expression and proteome will be studied by multivariate statistical approach, including principal component analysis, clustering and discriminant analysis. The hypothesis of this study is that non-castrated males F1 Angus-Nellore finished in feedlot (> 160 days) and slaughtered early (less than 24 months old) can produce meat with coloration, tenderness and intramuscular fat content similar to castrated F1 Angus-Nellore cattle when subjected to the same nutritional management. (AU)

Scientific publications

(4)

(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)

SANTIAGO, BISMARCK MOREIRA; BALDASSINI, WELDER ANGELO; TOMAZ, LAIS DE AQUINO; ROCHA, LEONE CAMPOS; DOS SANTOS, WELLINGTON BIZARRIA; CURI, ROGERIO ABDALLAH; LOYOLA CHARDULO, LUIS ARTUR; MACHADO NETO, OTAVIO RODRIGUES. Comparison of Dental Carcass Maturity in Non-Castrated Male F1 Angus-Nellore Cattle Finished in Feedlot. FOOD SCIENCE OF ANIMAL RESOURCES, v. 41, n. 3, p. 554-562, 2021. (18/00981-5, 19/11028-0)

SEVERINO, MARIANE; GAGAOUA, MOHAMMED; BALDASSINI, WELDER; RIBEIRO, RICHARD; TORRECILHAS, JULIANA; PEREIRA, GUILHERME; CURI, ROGERIO; CHARDULO, LUIS ARTUR; PADILHA, PEDRO; MACHADO NETO, OTAVIO. Proteomics Unveils Post-Mortem Changes in Beef Muscle Proteins and Provides Insight into Variations in Meat Quality Traits of Crossbred Young Steers and Heifers Raised in Feedlot. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, v. 23, n. 20, p. 19-pg., 2022-10-01. (16/04478-0, 18/00981-5, 19/11028-0)

SANTIAGO, BISMARCK; BALDASSINI, WELDER; NETO, OTAVIO MACHADO; CHARDULO, LUIS ARTUR; TORRES, RODRIGO; PEREIRA, GUILHERME; CURI, ROGERIO; CHIARATTI, MARCOS ROBERTO; PADILHA, PEDRO; ALESSANDRONI, LAURA; et al. Post-mortem muscle proteome of crossbred bulls and steers: Relationships with carcass and meat quality. JOURNAL OF PROTEOMICS, v. 278, p. 11-pg., 2023-03-13. (19/11028-0, 18/00981-5)

SANTIAGO, BISMARCK M.; BALDASSINI, WELDER A.; CHIARATTI, MARCOS R.; PANDEY, ANAND K.; TORRECILHAS, JULIANA A.; TORRES, RODRIGO N. S.; RIBEIRO, RICHARD, V; LANNA, DANTE P. D.; PEREIRA, GUILHERME L.; CURI, ROGERIO A.; et al. Skeletal muscle gene expression and meat quality of F1 Angus-Nellore young steers and bulls feedlot finished. LIVESTOCK SCIENCE, v. 268, p. 10-pg., 2023-01-18. (19/11028-0, 18/00981-5)