Effect of Different Levels of Supplemental Yeast on Performance Indicesand Serum Biochemistry of Broiler Chickens

摘要

The aim of the study was to investigate the effect of supplemental probiotic preparation on performance indicesand serum biochemistry of broiler chickens. Two hundred day-old Marshall broiler chicks were randomly selected anddistributed based on the level of supplementation into four groups of 50 chicks each (Control, C; E10.5%, E21.5% andE32.0%). Chicks were fed commercial broiler starter diet for the first 28 days of age followed by pelleted finisher dietfrom 29-42 days. Chickens fed 2.0% probiotic had a significantly higher body weight when compared with the controlgroup. Activity of alanine aminotransferase differed significantly in the group E1 and especially (p<0.01) in the group E2.Alkaline phosphatase activity decreased significantly (p<0.05), when compared with that of the control group. Bloodglucose concentration was significantly different (p<0.05) in E2 probiotic supplemented group when compared withcontrol. Cholesterol concentration in broiler chickens decreased significantly (p<0.01) in E1 experimental group.