Application Effect Of Complex Enzyme In The Miscellaneous Meal Diet On Yellow Broiler Chickens

This experiment was designed to explore the reasonable usage of complex enzyme in the miscellaneous meal diet on Yellow broiler chickens. A total of 300 Yellow broiler chickens were included in a feeding experiment. The experimental design consisted of five dietary treatments with three replicate pens of 28 chickens. Over the entire experimental period (Day 1 to 56), the diet of treatmentⅠtoⅤwere supplemented 0g/t,50g/t, 100g/t,150g/t and 200g/t complex enzyme. The effect of complex enzyme on growth performance, serum biochemical assays and caecum microflora of broilers be researched. The results indicated that:1. Compare with the control group, the ADFI were reduced by adding complex enzyme in the miscellaneous meal diet on the phases of 1～28d, the ADFI of group IV was the fewest of all group by 33.59 g/d, significantly lower than the control group about 8.02%(P<0.05). The ADG were improved by adding complex enzyme in the miscellaneous meal diet on the phases of 29～56d, the ADG of groupⅣwas the highest of all group by 39.01 g/d, significantly higher than the control group about 7.05%(P<0.05). the F/G of groupⅣandⅤwere significantly lower than the control group, in the whole trial period.2. Content of TP and Glu in serum were improved by adding complex enzyme in the miscellaneous meal diet on Yellow broiler chickens. Add 100 g/t complex enzyme can achieve significant difference effect. The serum GOT active of Add 150 g/t and 200 g/t complex enzyme group was significantly lower than control group, GPT was decreasing trend activity but no significant difference. There was no significant effect of CHO and TG in serum by adding complex enzyme in the miscellaneous meal diet on Yellow broiler chickens.3. The counts of E. coli, Salmonella and Total Aerobic Bacteria in caecum of yellow chicks was reduced in groupⅡtoⅤ, compare with the control group. There was no significant effect of the counts of lactobacillus.