Studies on the Availability of Carbonized Poultry Manure using as Broiler House Sheeting Material

试验研制了一种专门处理肉鸡粪便的螺杆式管式碳化炉。在碳化炉上增设干燥喂料器，利用废热，将热效率和碳化速度提高到350公斤/小时(产品木炭70公斤/小时)的加工速度。该炭化炉生产木炭的成本为2900/m^3，作为替代床上用品，这一成本是可以接受的，因为木屑床上用品的价格通常为3700/m^3。木炭制造时的有毒物质，如二恶英，需要向公共机构提出要求并进行检测。二恶英总量(二恶英+共面电路板)的实测值为0.08 ng-TEQ/M3n，粉尘浓度为0.014g/M3n，氯化氢浓度为140 mg/M3n，完全符合环保标准。肉鸡繁殖检查是在佐贺国家畜牧业研究所使用回收床进行的，回收床将制成的木炭与锯末混合在一起，在夏季和冬季进行了肉鸡繁殖试验。对40只肉鸡进行复式饲养试验，用25%和50%木炭混合床和对照组(仅用锯末)饲养56天。结果表明，混床病区的饲养效果(增重、需料率、繁殖率、拆解效果、OPG、大肠杆菌县数)均不逊于对照，证实了其作为循环垫料的有效性。

Screw carrier style tubular carbonization furnace, which specialized in the broiler excrement, was manufactured experiment ably. A drying feeder that additionally equipped on the carbonization furnace for utilizing the waste heat improved thermal efficiency and carbonization speed to 350 kg/hr (products charcoal 70 kg/hr) of the processing speed. The charcoal manufacturing cost by this carbonization furnace became \2,900/m^3 and this cost was well acceptable as substitution bedding because sawdust bedding price is usually \3,700/m^3. Measurement of toxic substances, such as dioxins at the time of charcoal manufacture, was requested to the public organization and performed. Measured values of the total dioxin (dioxin + coplanar PCB) were 0.08ng-TEQ/m3N, dust concentration 0.014g/m3N, and hydrogen chloride concentration 140mg/m3N means our furnace is completely satisfied the environmental criteria. The broiler breeding examination was performed summer and winter in the Saga National Institute of Animal Industry using recycling bed, which mixed the manufactured charcoal with saw dust. The breeding examination was made duplex of 40 broilers, and performed breeding for 56 days using the mixture bed (25 % and 50 % charcoal) and a control (only saw dust). As the result, breeding result (weight gain, feed demand rate, rearing rate, disassembly result, OPG, Escherichia coli county number) of the mixing bedding ward was not inferior for the control, and the effectiveness as recycling bedding was confirmed.