| Abstrakt: |
The effect of supplementation of multiple enzymes at 0, 1X, and 2X concentration to the diet containing variable protein sources (replacement of soybean meal with 10% guar meal (GM), 10% rapeseed meal (RSM), and 10% cottonseed meal (CSM)) was studied in a factorial manner on performance, carcass yield, protein, and energy utilization in commercial broiler males. For this purpose, 600-day-old commercial male broiler chicks (Ross) were randomly divided into 12 treatment groups with 10 replications of 5 birds each and reared in battery brooders up to 42 days of age. Treatment groups are as follows: T1 control and T2 and T3 corn-soya diet with enzymes at 1X and 2X concentrations, respectively. From T4 to T12 treatments, corn-soya meal was replaced by 10% GM, RSM, and CSM without, with 1X and 2X concentration of enzyme supplementation, respectively. The cumulative body weight gain was significantly (P < 0.05) higher in control and birds fed with GM diet in pre-starter and starter as well as during overall period. Supplementation of multiple enzymes at 1X and 2X did not influence body weight, feed intake, and FCR (P > 0.05) during 0–42 days of age. During experimental period, birds fed with the control diet and 10% GM diet showed significantly (P < 0.05) higher cumulative feed intake and better FCR compared to birds fed with 10% RSM diet and 10% cottonseed meal (CSM). Supplementation of multiple enzymes did not influence the mortality and slaughter variables and protein utilization in broilers. [ABSTRACT FROM AUTHOR] |
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