Which physiological response is most characteristic of a chicken exposed to severe heat stress?
Correct answer: B. Panting with increased respiratory rate
- A. Reduced respiratory rate
- B. Panting with increased respiratory rate
- C. Marked shivering with vasoconstriction
- D. Complete cessation of water intake
Explanation
Chickens lack functional sweat glands and lose heat mainly through respiratory evaporation, so panting increases during heat stress. Water intake usually rises rather than stops.
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