Abstract:

The purpose of this study was to investigate the effect of Fermented soybean meal additive on the growth and slaughter performance of broiler chicken. 250 one-day-old broiler chickens were randomly divided into five groups, each group included four repeats, 10 broilers per replicates. The control group (Group Ⅰ) was fed to the basic diet. The Group Ⅱwas fed to the basic diet supplemented with 30 mg/kg zinc bacitracin and 6 mg/kg colistin sulfate. The treatment groups (Group Ⅲ, Ⅳ, Ⅴ) were fed to the basic diet added with 3%、6% and 9% fermented soybean meal. The results showed that the average body weight gain of Group Ⅱ, Ⅲ, Ⅳ was significantly higher than control group (P<0.01), and GroupⅤ reached remarkable level (P<0.05). The feed/gain ratio of Group IV were significantly lower than control group (P<0.01), and no significant difference between other groups. The survival rate of Group Ⅱand Group Ⅴwas significantly higher compared with control group (P<0.01), and Group Ⅳ reached remarkable level (P<0.05). The Semi-eviscerated percentage of Group Ⅳ was significantly higher than control group and Group Ⅱ (P<0.05). The eviscerated percentage of treatment groups were decreased compared with the control group (P<0.05), and Group Ⅳ has significantly difference (P<0.01). There were significant difference between Group Ⅲ and control group in leg muscle rate (P<0.05). The conclusion of study showed that 6% Fermented soybean meal was added with basic diet could significantly reduced the feed/gain ratio of chicken, and significantly increase the weight gain.