4[7]Lenis N P, et al 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]. Asia-1us J Anim sci,1999,12:305-327.
5[9]Bakker G C M. Interaction between carbohydrates and fat in pigs: Impact on energy evaluation of feeds. Ph. D. thesis [D].Wageningen Institute of Animal Science, The Netherlands,1996.
6[10]CahnTT,AarninkAJA,MrozZ ,etal. Influence of dietary calcium salts and electrolyte balance on the urinary pH,slurry pH and ammonia volatelization from sl urry of growing finishing pigs [J]. J Anim. Sci., 1997; 75 (Supply1): 1989(Abstract).
7[13]Cole D J A, Schuerink H G and Morel A. The French and Dutch experience in controlling odour on farms [A]. In:Biotechnology in the Feed Industry. Proceeding of Alltech's Ekeventh Annual Symposium(Lyons T P and Jacques k A,eds) [C]. Nottingham: Nottingham University press, 1998. 73-79.
8[7]Lenis N P, et al. New technologies in low pollution swine diets:diet manipulation and use of synthetic amino acids, phytase and phase feeding for reduction of nitrogen andphosphorus excretion and ammonia emission[J].Asia-lus J Anim sci, 1999, (12):305-327.
9[9]Bakker G C M. Interaction between carbohydrates and fat in pigs:Impact on energy evaluation of feeds.Ph.D, thesis[D].Wageningen Institute of Animal Science, The Netherlands, 1996.
10[10]Cahn T T, Aarnink A J A, Mroz Z ,et al. Influence of dietary calcium salts and electrolytebalance on the urinarypH, slurry pH and ammonia volatelization from sl urry of growing finishing pigs[J].J Anim. Sci.,1997,75(Supply1):1989(Abstract).