He Ruogang said that government at various levels should allocate more funds to treatment facilities and encourage farmers to recycle the waste into clean energy.

Li Liping, a lawyer with the Beijing Sun God Law Office, said that the law needs to be improved.

"Environmental problems in stock raising involve departments like health, animal husbandry, inspection and quarantine so it will take all of these departments to deal with the problem," Li said.

Those responsible for major outbreaks of disease should be held accountable, she added.