Abstract
360 Three hundred and sixtyof unsexed broiler (Fawbro) 22 days old werwe used in thisto study the effect of additionng Vitamin c to Drinking water on some productive performance of broiler exposed to high cyclic heat (((25-36-25) 0c , Four experimental treatments werwe used as follow : (1) Control (No Vitamin c added), 2) Addition of 100mg Vitamin c Liter of Drinking water , (3) Addition of 150mg Vitamin cLiter of Drinking water and (4) Addition of 200mg Vitamin cLiter of Drinking water .Food and water were Ad Libitum .Statistic analysis of data Showed No Significant differences (p ≤= 0.5) for average weekly body weight ,Feed ConvertionConversion Ratio and Mortality between the treatments .The addition of vitamin c to Drinking water resulted in significant increasing (p ≤ =0.5) in Feed Consumption in eight week, decrease ,in Water Consumption in Seven ,and eight weeks , Total amount and significant Ddecrease in Body temperature and Bblood PH .
