Journal of Animal Behaviour and Biometeorology
https://jabbnet.com/article/doi/10.31893/2318-1265jabb.v5n4p139-143
Journal of Animal Behaviour and Biometeorology
Research Article Open Access

Quality of quail eggs confined in thermoneutral environment and heat stress

Rafael Costa Silva, José Wallace Barbosa do Nascimento, Ladyanne Raia Rodrigues, Patrício Gomes Leite, Thiago Galvão Sobrinho, Dermeval Araújo Furtado

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Abstract

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.

Keywords

animal welfare, thermal confort, thermoregulation

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Submitted date:
03/03/2017

Reviewed date:
05/23/2017

Accepted date:
06/07/2017

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