细菌对肉鸡肠粘液的粘附作用

Adhesion of Some Bacteria to Broiler Intestinal Mucus

研究两歧双歧杆菌、嗜酸乳杆菌、禽大肠杆菌O78、大肠杆菌ATCC 2 5 92 2、鸡白痢沙门氏菌和鼠伤寒沙门氏菌与肉鸡不同部位肠粘液糖蛋白的粘附性能 ,探讨两歧双歧杆菌和嗜酸乳杆菌对所试病原菌的抗粘附作用。结果表明 :在不同的肠道部位 ,两歧双歧杆菌、嗜酸乳杆菌、鸡白痢沙门氏菌和鼠伤寒沙门氏菌与肠粘液糖蛋白均有不同的粘附作用 ,而禽大肠杆菌O78、大肠杆菌ATCC 2 5 92 2在各肠段粘液上的粘附性能则相近 ;在相同的肠道部位 ,所试益生菌的粘附能力大于病原菌 ;两歧双歧杆菌和嗜酸乳杆菌对所试病原菌的粘附有不同的阻断作用 。

The objective of the study was to investigate adhesion of Bifidobacterium bifidum, Lactobacillus acidophilus, avian Escherichia coli O78, E. coli ATCC 25922, Salmonella pullorum and S. typhimurium, and the effects of B. bifidum and L. acidophilus on these adhesions. The results showed that there were different adhesion properties of B. bifidum, L. acidophilus, S. pullorum and S. typhimurium to mucus glycoproteins in different intestinal parts. But avian E.coli O78 or E. coli ATCC 25922 had a similar adhesion to different intestinal mucus. The adhesions of tested probiotic bacteria to the same intestinal mucus were higher than that of pathogenic bacteria. B. bifidum and L. acidophilus had different inhibition to adhesion of the tested pathogens to intestinal mucus, and sometimes they also had complementary action against pathogen adhesion.