the iraqi journal of agricultural science

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Republic of Iraq Ministry of Higher Education and Scientific Research

THE IRAQI JOURNAL OF AGRICULTURAL SCIENCE

Published in the College of Agriculture - University of Baghdad Republic of Iraq

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Volume (22)

No (2)

( 1991 )

Iraqi J. Agri. Sci. 22 (2) 1991

EFFECT OF HEAT STRESS ON SOME PHYSIOLOGICAL CHARACTERS IN IRAQI INDIGENOUS CHICKENS D. H. Al-Hassani Dept. of Animal Resources, Agricultural College, University of Baghdad, Abu-Ghraib, Baghdad, Iraq

Summary Forty normal neck and naked-neck Iraqi chickens, 20 weeks old, were used to study the effect of heat stress by exposing them to 44 oc and 30% RH for 5 hours. The temperature was later elevated quickly to 48°C. Body temperature (Tb) and respiratory rate (f) increased signifcantly (PA] I

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