7Akramiene D,Kondrotas A,Didziapetriene J. Ef ects of β-glucans on the immune system[J].Medicina,2007,(08):597-606.
8Kogan G,Kocher A. Role of yeast cel wal polysaccharides in pig nutri-tion and health protection[J].Livestock Sci,2007.161-165.
9Kreukniet M B,Nieuwl M G B,Zijpp A J. Phagocytic activity of two lines of chickens divergently selected for antibody production[J].Veterinary Immunology and Immunopathology,1994.371-387.