| Texto completo | |
| Autor(es): |
Tavares, Bartira De O.
[1]
;
Pereira, Danilo F.
[2]
;
Salgado, Douglas D'Alessandro
[1]
;
Bustos Mac-Lean, Priscilla A.
[1]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Paulista, Tupa, SP - Brazil
[2] Sao Paulo State Univ, UNESP, Sch Sci & Engn, Tupa, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Engenharia Agrícola; v. 38, n. 4, p. 478-485, JUL-AUG 2018. |
| Citações Web of Science: | 0 |
| Resumo | |
ABSTRACT The conventional production of eggs in cage systems is intense and compromises the laying hens welfare. More demanding consumer markets have been pushing to abolish the use of cages and thus provide better welfare in poultry laying. This research evaluated the mortality, production, and egg quality of two alternative production systems (free-range and organic free range free-range) and compared them with the conventional system. The research was carried out in two commercial poultry farms and the variables egg weight, shell egg resistance, Haugh unit, mortality and production were recorded during eight months. The results showed that the conventional system presented better production, lower mortality and better shell egg quality. The alternative systems had better internal egg quality. Alternative systems had greater variability in outcomes and problems with disease control, which indicate greater difficulty for proper management. (AU) | |
| Processo FAPESP: | 15/21204-9 - Custos operacionais e qualidade de ovos de diferentes sistemas de criação de poedeiras |
| Beneficiário: | Bartira de Oliveira Tavares |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |