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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comparison of Dental Carcass Maturity in Non-Castrated Male F1 Angus-Nellore Cattle Finished in Feedlot

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Santiago, Bismarck Moreira [1] ; Baldassini, Welder Angelo [1, 2] ; Tomaz, Lais de Aquino [1] ; Rocha, Leone Campos [2] ; dos Santos, Wellington Bizarria [1] ; Curi, Rogerio Abdallah [1, 2] ; Loyola Chardulo, Luis Artur [1, 2] ; Machado Neto, Otavio Rodrigues [1, 2]
Total Authors: 8
[1] Sao Paulo State Univ FCAV UNESP, Sch Agr & VeterinarianSci, Jaboticabal, SP - Brazil
[2] Sao Paulo State Univ FMVZ UNESP, Coll Vet Med & Anim Sci, Botucatu, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: FOOD SCIENCE OF ANIMAL RESOURCES; v. 41, n. 3, p. 554-562, 2021.
Web of Science Citations: 0

Dental classification of carcasses is used as a parameter of cattle maturity at slaughter, and it can influence carcass and meat quality traits. Brazilian beef-packing companies use the number of permanent incisor (PI) teeth as a parameter for bonus and certification of carcasses with superior quality. However, when non-castrated male such as F1 Angus-Nellore (Bos taurus x Bos indicus) are slaughtered, only animals without PI teeth are subsidized by the breed association. We evaluated these animals finished in feedlot for 180 days with zero versus two PI teeth on the carcass and meat quality traits. At the time of slaughter, 88 carcasses were selected, forming two treatments according to dental carcass maturity (0 versus 2 PI teeth; 44 animals per category). It was demonstrated that the number of PI teeth (0 versus 2 PI) did not influence (p>0.05) carcass (weights, yield, cooling loss, ribeye area and the backfat thickness) and meat quality traits (Longissimus thoracis chemical composition, color, cooking losses, shear force and pH). Thus, dental carcass maturity (zero versus two PI teeth) does not influence non-castrated male F1 Angus-Nellore finished in feedlot for 180 days. This is the first study to demonstrate that carcasses of non-castrated male F1 Angus-Nellore with two PI teeth should be subsidized in a similar way to those with zero PI teeth. Moreover, Brazilian beef-packing companies could produce heavier and leaner carcasses of acceptable quality though the use of crossbred cattle such as non-castrated F1 Angus Nellore. (AU)

FAPESP's process: 18/00981-5 - Identification of regulatory genes for tenderness and lipogenesis by transcriptomic and proteomic approach in beef cattle fed with different diets
Grantee:Welder Angelo Baldassini
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 19/11028-0 - Performance, carcass traits, meat quality and intramuscular lipogenesis in bulls and steers
Grantee:Otávio Rodrigues Machado Neto
Support Opportunities: Regular Research Grants