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Evaluation of Heat Stress Through Temperature and Pupillary Dilatation of the Guinea Fowl (Numida Meleagris) in a Controlled Environment
Marques, J. I; Leite, P. G; Furtado, D. A; Oliveira, A. G.
Affiliation
  • Marques, J. I; Universidade Federal do Maranhão. Chapadinha. BR
  • Leite, P. G; Universidade Federal de Campina Grande. Campina Grande. BR
  • Furtado, D. A; Universidade Federal de Campina Grande. Campina Grande. BR
  • Oliveira, A. G; Universidade Federal de Campina Grande. Campina Grande. BR
Rev. bras. ciênc. avic ; 23(3): eRBCA, 2021. tab, graf, ilus
Article in En | VETINDEX | ID: biblio-1490873
Responsible library: BR68.1
Localization: BR68.1
ABSTRACT
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 and capable of withstanding the climatic adversities of these regions. The objective of this study was to evaluate the pupillary temperature, smaller pupillary diameter, larger pupillary diameter and pupil area of guinea fowl housed in a controlled environment, under two air temperatures 26 ºC (thermal comfort zone) and 32 ºC (above the thermal comfort zone). The birds were distributed in a completely randomized design, with two treatments (air temperatures) and four replications (experimental box), with twelve birds each. The increase in air temperature resulted in a significant average increase (P < 0.05) of 6.0, 17.9, 18.6 and 38.4%, respectively, in pupillary temperature, smaller pupillary diameter, larger pupillary diameter and pupillary area of birds, being these measurements accurate in evaluation of thermal stress in homeothermic animals.
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Full text: 1 Database: VETINDEX Main subject: Chickens / Heat Stress Disorders Limits: Animals Language: En Journal: Rev. bras. ciênc. avic Year: 2021 Document type: Article

Full text: 1 Database: VETINDEX Main subject: Chickens / Heat Stress Disorders Limits: Animals Language: En Journal: Rev. bras. ciênc. avic Year: 2021 Document type: Article