Genetic selection on beef cattle: effects on carcass edible meat and meat quality

Authors

  • Romeu Fernandes Nardon Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Ação Regional, Nova Odessa, SP
  • Alexander George Razook Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Estação Experimental de Zootecnia de Sertãozinho, Sertãozinho, SP
  • Alexandre Amstalden Moraes Sampaio Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Zootecnia, Jaboticabal, SP
  • Luís Orlindo Tedeschi Universidade de Cornell, Ithaca, NY
  • Leopoldo Andrade de Figueiredo Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Estação Experimental de Zootecnia de Sertãozinho, Sertãozinho, SP
  • Celso Boin Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Piracicaba, SP
  • Maria Lúcia Pereira Lima Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Núcleo de Pesquisas Zootécnicas do Nordeste, Ribeirão Preto, SP

Keywords:

Caracu, Carcass, Guzera, Nellore, Genetic Selection

Abstract

To verify the effect of cattle genetic selection based on weight at 378 days of age and breed of cattle on carcass traits, 144 bulls in which 36 from the selected Nellore (NeS), selected Guzera (GuS), selected Caracu (CaS) and control Nellore (NeC) herds from the Estação Experimental de Zootecnia de Sertãozinho (Sertãozinho, SP, Brazil), were evaluated. The animals were slaughtered on 88 ± 10, 173 ± 11 e 266 ± 11 days of feedlot, on the average, 16.1 ± 0.8; 19.0 ± 0.9 e 22.0 ± 1.1 month of age, and averaging 385 ± 33, 464 ± 33 e 547 ± 53 kg of body weight for the 1st, 2nd and 3rd slaughter points, respectively. The analyzed traits were dressing percentage, carcass weight, edible meat weight, trimmed fat and bone weights, fat depth, and eye muscle area. The shear force and cooking loss were used to evaluate the meat quality of the Longissimus dorsi muscle. The NeS group showed greater carcass weight, edible meat weight, trimmed carcass cuts, and bone weight than the NeC group (P<0.05), except for hump cut weight. However, they had similar dressing percentage, trimmed carcass weight, fat depth, eye muscle area, cooking loss, and shear force. The NeS group presented greater dressing percentage than GuS and CaS groups (P<0.05). The NeS and CaS groups had similar carcass weights and edible meat of carcass and primal cuts, forearm and loin cut weights, and cooking loss. The CaS group had lesser trimmed fat weights, hump, rump steak, topside, silverside, thick flank cut weights, and fat depth than NeS group (P<0.05). But, the CaS group had greater chuck and loin cut weights, eye muscle area, and bone weight than NeS group. CaS group presented lesser shear force value compared to other groups.

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Published

2013-12-02

Issue

Section

ANIMAL NUTRITION

How to Cite

Genetic selection on beef cattle: effects on carcass edible meat and meat quality. (2013). Bulletin of Animal Husbandry, 58(1), 21-34. http://bia.iz.sp.gov.br/index.php/bia/article/view/1391

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