| Revista: | Revista Brasileira de Zootecnia |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000445531 |
| ISSN: | 1516-3598 |
| Autors: | Cardeal, Paula Costa1 Rocha, Júlia Sampaio Rodrigues1 Pompeu, Mariana André1 Pereira, Luiz Felipe Pinho1 Saldanha, Mariana Masseo1 Baião, Nelson Carneiro1 Araújo, Itallo Conrado Sousa de1 Lara, Leonardo José Camargos1 |
| Institucions: | 1Universidade Federal de Minas Gerais, Escola de Veterinaria, Belo Horizonte, Minas Gerais. Brasil |
| Any: | 2020 |
| Volum: | 49 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | The main objective of this study was to evaluate the effect of placement time on the performance of broiler chickens and the development of their gastrointestinal tract. Two methodologies for measuring broiler performance were compared, one considering day of pulling as the first day, the other considering day of placement as the first day. A total of 1,056 one-day old male Cobb® 500 broiler chicks were subjected to treatments of different placement times after pulling from the hatchery: 3, 24, 48, and 72 h. The studied traits were: feed intake, body weight, feed conversion, viability, and gastrointestinal tract development. When day of pulling was considered the first day, feed intake and body weight at 39 days decreased as placement time increased. However, when day of placement was considered the first day, fasting up to 72 h did not have any negative effect on broiler performance at 39 days post-placement. Placement time did not affect yolk sac utilization or liver weight. At nine days post-placement, weights of gizzard + proventriculus, pancreas, and small intestine increased with increasing placement time. At seven days of age, there was no effect of placement time on villus height or crypt depth. It is possible to place broiler chicks up to 72 h post-hatching with no negative effects when day of placement is considered the first day for evaluating broiler performance |
| Disciplines | Medicina veterinaria y zootecnia |
| Paraules clau: | Aves de corral, Nutrición animal, Pollos de engorda, Machos, Producción animal, Tracto gastrointestinal |
| Keyword: | Poultry, Animal nutrition, Broilers, Animal production, Males, Gastrointestinal tract |
| Text complet: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
