Journal of Stress Physiology & Biochemistry, Vol. 9 No. 3 2013, pp. 54-60 ISSN 1997-0838
Original Text Copyright (cc) 2013 by   Aarif, Mahapatra, Yatoo, Dar



ORIGINAL ARTICLE
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Impact of Cold Stress on Physiological, Hormonal and Immune Status in Male and Female Broad Breasted White Turkeys

Ovais Aarif1*, P.S. Mahapatra2, M.A. Yatoo2 and Showket Ahmed Dar3

1 Dairy Cattle Physiology Division, National Dairy Research Institute, Karnal-132001 (India)
2 Indian Veterinary Research Institute, Izzatnagar (India)
3 Skuast-Kashmir (India)


*E-Mail: ascientific@aec.org.sy


Received  February 5, 2013

In this study physiological, certain blood hormones and immune status of male and female Broad Breasted White turkeys were recorded under cold stress. Birds were acclimated two weeks prior to the start of experiment and later divided into two groups. Control group (n=12 with equal number from each sex) was maintained at an environmental temperature of 27-30C and Test group (n=12 with equal number from each sex) was housed in a designed chamber were  the  temperature  (101C)  remained  stable  at  least  for  5-6  hours  in  a  day.  After  3 consecutive days (72 hours) of temperature treatment Phytohaemagglutinin-P (PHA-P) at the dose rate of 0.5 mg in 0.1 ml PBS were injected to the patagium of both control and test group of birds to study the cell mediated immune response by measuring the dermal swelling in response to inflammatory reaction after 24 hours of injection of Phytohaemagglutinin-P (PHAP). After 96 hours of cold treatment the blood samples were collected from the wing vein to analyze the blood hormonal levels using standard protocols. The physiological parameters like respiration rate, rectal temperature and surface temperature were recorded at the morning hours  of  the  day  during  experimental  period.  Significant  difference  (p≤0.01)  between treatments were observed in body temperatures, respiration rate, Heterophil%, H/L ratio, Wing web thickness, T4 and cortisol levels.

Key words:    Broad breasted white turkeys, cold stress, hormones, immunity

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