| Revista: | Scientia Agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000456228 |
| ISSN: | 0103-9016 |
| Autores: | Jacinto Valderrama, Rickyn Alexander1 Sampaio, Guilherme Sicca Lopes3 Lima, Maria Lucia Pereira2 Cyrillo, Joslaine Noely dos Santos Gonçalves2 Pflanzer, Sergio Bertelli1 |
| Instituciones: | 1Universidade Estadual de Campinas, Departamento de Tecnologia de Alimentos, Campinas, Sao Paulo. Brasil 2Instituto de Zootecnia, Centro de Pesquisa em Bovinos de Corte, Sertaozinho, Sao Paulo. Brasil 3Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Melhoramento e Nutricao Animal, Botucatu, Sao Paulo. Brasil |
| Año: | 2021 |
| Volumen: | 78 |
| Número: | 2 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | The present study aimed to evaluate the effects of immunocastration on the animal growth, carcass traits, and meat quality of Nellore cattle receiving or not Ionophore supplementation at pasture or pasture with concentrate (semi-feedlot). The first experiment (Pasture) was carried out during the rainy season, while the second (supplemented = Semi-feedlot) was conducted during the dry season. In each assessment, 60 males were allocated into three treatments, in a completely randomized design: non-castrated, immunocastrated (anti-gonadotropin-releasing hormone vaccine), and immunocastrated animals receiving ionophore. The highly energetic supplemented diet was prepared using 85 % corn and 10 % soybean meal at 1 % body weight, while the ionophore was provided with salt containing 1,650 mg kg−1 of lasalocid. After slaughter, the carcasses were graded, and Longissimus thoracis et lumborum samples were collected for meat quality analysis. The non-castrated animals exhibited a more significant final body weight and hot carcass weight than those immunocastrated regardless of ionophore supplementation (p < 0.05). The carcasses of non-castrated animals had less fat cover and marbling than castrated animals. A high incidence of dark cutting beef was verified in non-castrated animals. The immunocastrated cattle produced tenderer beef, mainly at pasture rearing. In conclusion, regardless of production system or ionophore supplementation, immunocastration was an adequate choice to generate high-quality meat, since it increased marbling and improved beef tenderness. However, limitations regarding animal growth should be estimated |
| Disciplinas: | Medicina veterinaria y zootecnia |
| Palabras clave: | Bovinos, Nutrición animal, Ionóforos, Inmunocastración, Bos indicus, Carne |
| Keyword: | Animal nutrition, Bovines, Ionophores, Immunocastration, Bos indicus, Meat |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
