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Productive performance and carcass characteristics of castrated and non-castrated Beefalo-Nellore beef cattle finished in a feedlot or kept on pasture.
da Costa Gomes, Rodrigo; Ítavo, Luís Carlos Vinhas; Ítavo, Camila Celeste Brandão Ferreira; de Nadai Bonin Gomes, Marina; Dias, Alexandre Menezes; da Silva, Manoel Gustavo Paranhos; Teixeira, Priscilla Dutra; Gurgel, Antonio Leandro Chaves.
Afiliação
  • da Costa Gomes R; Embrapa Gado de Corte, Empresa Brasileira de Pesquisa Agropecuária, Campo Grande, MS, Brazil.
  • Ítavo LCV; Faculdade de Medicina Veterinária E Zootecnia (FAMEZ), Universidade Federal de Mato Grosso Do Sul (UFMS), Av. Senador Filinto Müller, 2443. Cidade Universitária, Campo Grande, MS, 79070-900, Brazil. luis.itavo@ufms.br.
  • Ítavo CCBF; Faculdade de Medicina Veterinária E Zootecnia (FAMEZ), Universidade Federal de Mato Grosso Do Sul (UFMS), Av. Senador Filinto Müller, 2443. Cidade Universitária, Campo Grande, MS, 79070-900, Brazil.
  • de Nadai Bonin Gomes M; Faculdade de Medicina Veterinária E Zootecnia (FAMEZ), Universidade Federal de Mato Grosso Do Sul (UFMS), Av. Senador Filinto Müller, 2443. Cidade Universitária, Campo Grande, MS, 79070-900, Brazil.
  • Dias AM; Faculdade de Medicina Veterinária E Zootecnia (FAMEZ), Universidade Federal de Mato Grosso Do Sul (UFMS), Av. Senador Filinto Müller, 2443. Cidade Universitária, Campo Grande, MS, 79070-900, Brazil.
  • da Silva MGP; Faculdade de Medicina Veterinária E Zootecnia (FAMEZ), Universidade Federal de Mato Grosso Do Sul (UFMS), Av. Senador Filinto Müller, 2443. Cidade Universitária, Campo Grande, MS, 79070-900, Brazil.
  • Teixeira PD; Faculdade de Medicina Veterinária E Zootecnia (FAMEZ), Universidade Federal de Mato Grosso Do Sul (UFMS), Av. Senador Filinto Müller, 2443. Cidade Universitária, Campo Grande, MS, 79070-900, Brazil.
  • Gurgel ALC; Departamento de Zootecnia, Universidade Federal Do Piauí, Bom Jesus, PI, Brazil.
Trop Anim Health Prod ; 56(8): 276, 2024 Sep 24.
Article em En | MEDLINE | ID: mdl-39316235
ABSTRACT
Beefalo is a fertile hybrid descendant of domestic cattle (Bos taurus) and American buffalo (Bison bison). Crossbred (¾Beefalo»Nellore) beef cattle raised and finished in a feedlot or on pasture were evaluated for the effect of two ages (8 and 13 months) at castration on nutrient intake, performance, and carcass characteristics. In the feedlot, they received a total diet with a roughageconcentrate ratio of 5545, and those kept on Brachiaria decumbens pastures were supplemented at 0.8% of body weight (BW) with the same concentrate based on corn and soybean meal (17.8% CP and 73% TDN). Thirty-six crossbred (¾ Beefalo » Nellore) beef cattle with 209.2 ± 14.6 kg BW were used, which at weaning, at 8 months of age, were randomly divided into two groups, one of them destined to the feedlot system and the other group to the supplementation system on pasture. In each system (feedlot and pasture) the following treatments were distributed castration at 8 months (at weaning, C8), castration at 13 months (C13), and non-castrated (NC), with six animals per treatment by system. All animals were slaughtered at 18 months of age. There was no significant interaction between the systems and castration ages for all variables studied. The averages of slaughter weight of feedlot animals were 475.6; 494.3 and 510.7 kg; and finished in pasture were 424.3; 428.0 and 418.7 kg for C8, C13, and NC treatments, respectively. The average subcutaneous fat thickness of the feedlot steers were 4.5, 3.5, and 1.3 mm, and for pasture-finished steers were 2.4, 1.6, and 1.8 mm for C8, C13, and NC treatments, respectively. Non-castrated animals have greater performance and carcass characteristics than castrated animals independent of the finished system. Animals non-castrated finished on Brachiaria grass pastures and slaughtered at 18 months of age require more intensive feeding management or even greater age at slaughter to obtain an ideal carcass finishing despite castration.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Orquiectomia / Ração Animal / Criação de Animais Domésticos Limite: Animals Idioma: En Revista: Trop Anim Health Prod Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Orquiectomia / Ração Animal / Criação de Animais Domésticos Limite: Animals Idioma: En Revista: Trop Anim Health Prod Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos