Quality of quail eggs confined in thermoneutral environment and heat stress

• Autor(a) principal: Silva, Rafael Costa
• Data de Publicação: 2017
• Outros Autores: Nascimento, José Wallace Barbosa do, Rodrigues, Ladyanne Raia, Leite, Patrício Gomes, Sobrinho, Thiago Galvão, Furtado, Dermeval Araújo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of Animal Behaviour and Biometeorology
• Texto Completo: https://malque.pub/ojs/index.php/jabb/article/view/3005
• topic: animal welfare; thermal confort; thermoregulation

The production of Japanese quail has been emphasizing in national scenario in front of the other already consolidated cattle productions and within the agribusiness agroindustrial system. In the last two decades, the welfare of the birds in the environments of creation has gained more relevance, since the understanding of the physiological responses of the birds to the climatic variations is a preponderant factor in order to seek high productivity indexes. The objective of this study was to evaluate the quality of quail eggs confined in thermoneutral environment and thermal stress. The experiment was carried out in a climatic chamber, where three mini-chambers with a ventilation system were inserted, with 10 Japanese quails each. The microclimatic variables were controlled and monitored at temperatures 20, 26 and 32 oC and two air velocities 0.5 m s-1 and 2 m s-1. The collected eggs were evaluated for egg mass, specific gravity, Haugh unit, yolk index and internal quality unit. The design used in the research was the factorial arrangement of 3x2 (three temperatures and two air velocities). It was observed that in the stress combinations, 20 ° C and 2.0 m s -1, and 32 ° C and 0.5 m s -1, most egg quality parameters were negatively affected, evidencing the importance of Welfare of birds for a better productive response.