An experiment was conducted to study the effects of fermented barley with Lactobacillus spp. and barley supplemented with enzyme on performances of broilers. Two hundred forty one day old Ross broilers were assigned to four groups, with 5 replicate and 12 birds per each replicate. Experimental diets were: Control diet based on corn-soybean meal (T1)and three other diets containing: 35% barley without any enzyme or fermentation (T2) supplemented with enzyme (T3) and fermented with lactobacillus spp. (T4) Feed intake, weight gain and feed conversion were measured weekly. Blood lipid parameters (total cholesterol and triglycerides) were measured at days 21 and 42. Feed intake was decreased by diet containing barley with no treatment compared to control diet (p<O.05). Diet containing barley with no treatment had adverse effects on performance and blood lipid parameters of broilers. However, these effects were not significant. Enzyme supplementation resulted in increase in feed intake, bodyweight, weight gain compared to diet with no supplementation (p<O.05). Feed conversion and parts yields were not affected by experimental diets. However, these parameters were numerically improved by enzyme supplementation and lactic acid fermentation. The results of this experiment indicated that enzyme supplementation had positive effects on nutritive value of barley in broilers diet.

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