4Healy B J.Optimum particle size of corn and hard and soft sorghum for nursery pigs.J.Anim.Sci.,1994(72):2227 ~ 2236
5Joan H.Effects of diets differing in propensity to promote gastric lesions on defense systems in gastric mucosac.J.Anim.Sci.,1999(77):2715 ~ 2720
6Wordra K J.Reducing particle size of corn in lactation diets from 1200 to 400 micrometers improves sow and litter performance.J.Anim.Sci.,1995(73):421 ~426
7Wordra K J.Effects of reducing particle size of corn in lactation on energy and nitrogen metabolism in second-parity sows.J.Anim.Sci.,1995(73):427 ~432