Effects of fermented soybean meal on growth and slaughter performance of cherry valley ducks

800 1-day-old cherry valley ducks were randomly divided into five groups(4 replications per group,40 ducks per replication) to determine the effects of fermented soybean meal on growth performance and slaughter performance.Antibiotic group was fed with the basic diet supplemented with 30 mg·kg-1 zinc bacitracin and 6 mg·kg-1 colistinsulfate,the control group was fed with basic diet,the experimental groups were respectively fed with basic diet supplemented with 3%,6%,9% fermented soybean meal,and the nutrients of all groups were regulated to the same level.The experimental results showed that the average feed intake of antibiotic group was significantly higher than the control group,3%,6% fermented soybean meal group(P0.05),but all the experimental groups were not significantly higher than control group(P0.05).The average weight gain of the treatment groups and antibiotic group was significantly higher than control group(P0.05).The feed conversion rates of 6% fermented soybean meal group were significantly lower than control group(P0.05),and the groups except 6% fermented soybean meal group were not significant difference.The dressed carcass percentage,whole net carcass rate and half net carcass rate had no significant difference in every group(P0.05).The percentage of breast muscle of 3%,6% fermented soybean meal group was significantly higher than control group(P0.05),but the leg muscle of 9% fermented soybean meal group was significantly higher than control group(P0.05).Economic benefits in other groups were dramatically increased when compared with the control group(P0.05).It was concluded that 6% fermented soybean meal added with basic diet could significantly reduce the feed conversion rates of cherry valley duck,and significantly increase the weight gain and the percentage of breast muscle,and increase economic benefit.