Experience and Enlightenment of Manure Treatment Model in Major Pig Farming Countries Abroad
With the continuous expansion of pig farming,manure treatment had become a key issue for environmental protection and sustainable development.This paper selected pig producing countries such as United States,Denmark,Netherlands and Germany as the analysis objects,and analyzed the development status of pig industry,livestock and poultry manure and sewage treatment mode,policies and regulations and technical models of manure resource utilization.The results showed that the United States had formed u-nique experience in the legal and regulatory system,planning layout and technical model of livestock pollution prevention and control.Denmark had unique characteristics in legal system,ecological balance and compensation,technical model and policy support.Netherlands had significant advantages in concept and policy.Germany had something worth learning from in policy support.On the basis of these results,this paper analyzed the development experience of four countries in improving relevant standards,mechanisms,supervision and planning to treat manure scientifically and accurately,proposed that China should learn from the advantages of all par-ties and combined its own national conditions to make continuous efforts in improving the legal system,optimizing the industrial layout,strengthening technological innovation and implementing subsidy policies,so as to promote the efficient development of animal hus-bandry manure treatment and achieve sustainable development of the industry.