7PHILIPPE F X,CABARAUX J F,NICKS B.Ammonia emissions from pig houses:infuencing factors and mitigation techniques[J].Agriculture,Ecosystems & Environment,2011,141(3/4):245-260.
8AARNINK A J A,VERSTEGEN M W A.Nutrition,key factor to reduce environment-al load from pig production[J].Livestock Science,2007,109(1/2/3):194-203.
9BRAAM C R,KETELAARS J J M H,SMITS M C J.Effects of floor design and floor cleaning on ammonia emission from cubicle houses for dairy cows[J].Netherlands Journal of Agricultural Sciences,1997,45(1):49-64.
10LENIS N P,JONGBLOED A W.New technologies in low pollution swine diets : diet manipulation and use of synthetic amino acids, phytase and phase feeding for reduction of nitrogen and phosphorus excretion and ammonia emission [ J ]. Asian Australasian Journal of Animal Sciences, 1999,12 (2) :305-327.