四川规模化猪场仔猪黄、白痢E.coli的分离鉴定

Isolation and Identification on Yellow and White Scour of Piglet E.coli from Large-scale Pig Farm in Sichuan Province

从四川省 17个规模化猪场发生典型仔猪黄、白痢猪的肛拭粪样及死亡猪的心血和肝脏中分离鉴定出 2 45株致病性大肠肝菌 ,用 35种大肠杆菌O抗原单价血清进行了血清学鉴定。结果表明 :2 45株分离菌有 172株能定型 ,分属 30种血清型 ,其中以 0 60 (13.3% )、0 89(10 .47% )、0 119(9.30 % )、0 14 1(8.14% )、0 9(8.14% ) 0 2 0 (6 .40 % )、0 137(5 .81% )和 0 10 1(5 .2 3% )等 8种为优势血清型。同一猪场存在多种血清型 ,大多数猪场有本场的优势血清型。同一地区的不同猪场流行的主要血清型一般不同。不同地区猪场的优势血清型有的相同 ,有的不同。四川规模化养殖场分离的E .coli血清型与 80年代初报道的血清型比较已发生了较大变化。

pathogenic E.coli strains were isolated and identified from the typical cases of yellow and white sour of piglet in 17 large_scale pig farms in Sichuan province.The isolates were identified by 35 kinds of E.coli single O serum.The results show: Among 245 E.coli isolates,serogroups of 172;strains are determined. 30 kinds of O serogroups are discovered in these isolates and the predominant types are O 60 (13.37%)?0 89 (10.47%)?O 119 (9.30%)?O 141 (8.14%)?O 9 (8.4%)?O 20 (6.40%)?O 137 (5.81%) and O 101 (5.23%)?There are many kinds of serogroups in the same pig farm and their own predominant types in most of pig farms.Some predominant serogroups in different districts are identical, others are different but serogroups of different pig farms in the same district are generally different.Serogroups in large_scale pig farms are greatly different from those separate farms in Sichuan province.