This experiment was aimed to study the effect of adding vinegar to drinking water on the productive and physiological
performance of broiler. A total of ninety (one day old), non sexed chicks of Ross strain were randomly allocated to three
treatments and each treatment consists of 30 birds with 3 replicates (10 birds each). The treatments were: Treatment 1 (T1):
Control, reared on standard ration and tap water. Treatment 2 (T2): reared on standard ration and tap water supplement with
vinegar (2.5 ml/Liter). Treatment 3 (T3): reared on standard ration and tap water supplement with vinegar (5.0 ml/Liter). The
results revealed a significant increase (P < 0.05) in live body weight, accumulative body weight gain and feed conversion ratio,
and significant decrease in mortality percentage of treatment T3 (Drinking water with 5.0 ml/L vinegar) compared with
treatment T2 (Drinking water with 2.5 ml/L vinegar) and Treatment T1 (Control). Also, no -significant effect were observed
among treatment in PCV, WBC, RBC, Hb, H/L and glucose, Total Protein, albumin and Cholesterol concentration of plasma.
In conclusion, supplementation of vinegar (5.0 ml/Liter drinking water) in current Study lead to, significant improvement in
chickens productive performance and health.