To Reduce Environmental Pollution Of Laying Hen Manure In Cage System And Bio-Bed System

The rapid development of livestock and breeding industry caused serious pollution to the environment. As a big livestock farming province, the pollution of Jiangsu is very serious. So carrying out the surveys of livestock manure pollution are of great significance The study consists of three parts:The first, estimating the livestock manure pollution, after knowing that poultry manure were major manure pollution, then investigated the environmental condition of layer house and the river water quality in Hai’an. The third, measured the thermal environment and the air status of the plastics greenhouse for laying hens in Zhenjiang and compared the two modes,for the sake of resolving the problem of manure pollution.Part1:According to the statistical data and literatures, he computational parameter and statistical methods of pig fecal equivalent of the livestock manure in Jiangsu province is determined, and pig excrement equivalent number from2003to2007were calculated. Based on the pig fecal equivalent, we could forecast to the future five years livestock excrement load early warning value in the future five years by using the model of GM (1,1).The result indicates that the livestock manure emissions of Jiangsu province are about8000million tons, poultry manure are the most important influence factor, the proportion of which in all the animals is about40%.The pollution load of livestock manure in Zhenjiang city will aggravate, the livestock manure proportion of which in all province is raising from1.76of2003to2.15of2006,and the pollution of Haian county is still of severity.Part2:This paper aims to investigate the environmental condition of layer house and the river water quality in Hai’an. The results showed that:the concentration of ammonia in layer house in winter was up to (40.2±0.6) mg/m3in winter, relative humidity55.6-80.2%, the average temperature in summer was33.18℃.The ammonia nitrogen and P were the main pollutants according to the surface water environment quality standard. It reveals that the environment has been polluted by livestock manure. So, how to disposal livestock manure has significant meaning.Part3:The thermal environment and the air status of the plastics greenhouse for laying hens were measured. The results showed that:The range of temperature was19.8℃-26.7℃, the humidity was63.2%-68.9%, The concentration of NH3and PM10were(1.48±0.08) mg/m3,(0.327±0.013)mg/m3.To conclude, the environment in the plastics greenhouse for laying hens is good, and as no manure brought up and no pollution to the environment So, this new feeding model can reduce emissions usefully.