DOI: 10.5958/0976–0555.2014.00453.1    | Article Id: B-191 | Page : 344-349
K.A. Al-Samawi, M.J. Al-Hassan* and A.A. Swelum mjalhassan@gmail.com
Address : Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, PO Box 2460; Riyadh 11451, Kingdom of Saudi Arabia


The aim of this study was to determine the effects of heat stress on the thermoregulation in Aardi goat. The present study was conducted for 35 days in summer and 35 days in winter. Ambient temperature (Ta), relative humidity (RH) inside the pens were recorded continuously every 6 hours (4 time/day) and temperature humidity Index (THI) was calculated. Ten healthy Aardi does, aged 6-7 months were used. The experiment started in summer, followed by winter (control). The thermoregulation of animals under heat stress was evaluated every five days for 35 days in summer (n=8) and in winter (n=8) from 10:00-11:00 am. Measurements, including skin temperature (Tskin), coat temperature (Tcoat), rectal temperature (Trectal), vaginal temperature (Tvaginal), heart rate (HR), respiratory rate (RR), were recorded. In addition, triiodothyronine (T3), thyroxin (T4) and Cortisol serum concentration were calculated. The results revealed that Ta, THI,  TCoat, Tskin, TVaginal, TRectal, HR, RR and serum cortisol concentration values were significantly (P


Aardi goat Cortisol Heat stress Thermoregulation.


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