Evaluation of Heat Stress Through Temperature and Pupillary Dilatation of the Guinea Fowl (Numida Meleagris) in a Controlled Environment

The commercial exploitation of guinea fowl (Numidia meleagris) is a viable alternative for small rural properties in arid and semi-arid regions, as they are rustic birds capable withstanding the climatic adversities these regions. objective this study was to evaluate pupillary temperature, smaller diameter, larger diameter pupil area housed controlled environment, under two air temperatures: 26 ºC (thermal comfort zone) 32 (above thermal zone). were distributed completely randomized design, with treatments (air temperatures) four replications (experimental box), twelve each. increase temperature resulted significant average (P < 0.05) 6.0, 17.9, 18.6 38.4%, respectively, birds, being measurements accurate evaluation stress homeothermic animals.