Van T K
Vet Med Nauki. 1984;21(2):18-23.
A total of 127 strains of Escherichia coli were isolated from the small intestine, mesenterial lymph nodes, and parenchymal organs from dead pigs or pigs that were killed for diagnostic purpose as well as from rectal swab samples taken from diseased or clinically normal animals. All were studied with regard to haemolytic properties via biochemical and serologic methods along for sensitivity to antibiotics. It was found that the isolated strains manifested characteristic biochemical behaviour (79 of them proved haemolytic, and 48 were nonhaemolytic ). About 30 per cent of all strains contained the K88 antigen. This antigen was encountered more frequently in the strains that were isolated on small pig farms as well in those that were isolated from dead animals. In the period of studies on the farms prevailed strains that belonged to serologic groups O45 and O138 . In recent years the resistance of the E. coli strains as regards antibiotics has grown considerably. The percent of resistant strains has been higher on the industrial swine-breeding complexes as compared to the smaller farms.
从死猪或因诊断目的而宰杀的猪的小肠、肠系膜淋巴结和实质器官以及从患病或临床正常动物采集的直肠拭子样本中总共分离出127株大肠杆菌。通过生化和血清学方法对所有菌株进行了溶血特性研究以及抗生素敏感性研究。结果发现，分离出的菌株表现出特征性的生化行为（其中79株被证明具有溶血活性，48株无溶血活性）。所有菌株中约30%含有K88抗原。在小型养猪场分离出的菌株以及从死畜中分离出的菌株中更频繁地发现这种抗原。在农场的研究期间，占主导地位的菌株属于血清群O45和O138。近年来，大肠杆菌菌株对抗生素的耐药性显著增强。与较小的农场相比，工业养猪场中耐药菌株的比例更高。
