(2009). EVALUATION HEAT TOLERANCE OF ACCLIMATIZED WHITE LEGHORN AND BROWN NEWHAMPSHIRE COCKS AND COMPARING THEM WITH IRAQI LOCAL BROWN AND BARRED. , 22(1), 0-0.
. "EVALUATION HEAT TOLERANCE OF ACCLIMATIZED WHITE LEGHORN AND BROWN NEWHAMPSHIRE COCKS AND COMPARING THEM WITH IRAQI LOCAL BROWN AND BARRED". , 22, 1, 2009, 0-0.
(2009). 'EVALUATION HEAT TOLERANCE OF ACCLIMATIZED WHITE LEGHORN AND BROWN NEWHAMPSHIRE COCKS AND COMPARING THEM WITH IRAQI LOCAL BROWN AND BARRED', , 22(1), pp. 0-0.
EVALUATION HEAT TOLERANCE OF ACCLIMATIZED WHITE LEGHORN AND BROWN NEWHAMPSHIRE COCKS AND COMPARING THEM WITH IRAQI LOCAL BROWN AND BARRED. , 2009; 22(1): 0-0.

EVALUATION HEAT TOLERANCE OF ACCLIMATIZED WHITE LEGHORN AND BROWN NEWHAMPSHIRE COCKS AND COMPARING THEM WITH IRAQI LOCAL BROWN AND BARRED

AL-TAQANI
Article 1, Volume 22, Issue 1, 2009, Pages 0-0
Abstract
Fourty eight cocks, 24 Wk. old used, each of 12 birds represented the following; acclimatized white leghorn (AL), acclimatized Brown Newhampshire (AN), local Brown (LB) and local Barred (Lb). The study aimed to evaluate the thermal tolerance of acclimatized and local chickens. All birds exposed to acute heat stress (41±1C˚), 40±2% RH for 3 hours. Some physiological and blood criteria were measured as indicators of heat stress.
Results exhibited a significant (p<0.05) increase in body temperature (Tb), heterophil/ 1ymphocyte ratio (H/L) and blood cholesterol, and a significant (p<0.05) decrease in packed cell volume (PCV), hemoglobin (Hb) and blood protein post exposing to heat stress in comparison to pre heat stress, whereas no significant changes were noticed in blood glucose in all birds.
Percentage of changes of PCV, Hb, H/L and glucose post heat stress were significant (p<0.05) in AL and AN comparing to LB and Lb birds. It can be concluded that LB and Lb were superior on AL and AN cocks in their tolerance and resistance to heat stress
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