6Bolduan G,Jung H,Schneider R,et al.Effeet of propionic and formic acids in piglets [J].J Anim Physiol Anim Nutr,1988b,59: 72-78.
7Cranwell P D.The development of acid and pepsin secretory capacity in the pig; the effects of age and weaning:1.Studies in anaesthetized pigs[J].Br J Nutr,1985,54:305-320.
8Kirchgessner M,Roth F X.Fumaric acid as a feed additive in pig nutrition[J].Pig News Inf,1982,3:259-263.
9Giesting D W,Easter R A.Response of starter pigs to supplemention of corn-soybean meal diets with organic acid[J].Journal of Animal Science,1985,60:1288.
10Kil D Y.Comparision of growth performance,nutrient digestibility and white blood cell counts by organic or inorganic acid supplementation in weaned pigs:[D]. Korea:Seoul National University,2004.
