Toxogenitc types of Clostridium perfringens isolated from calves suspected necrotizing enteritis in six provinces of Viet Nam

Abstract

Clostridium perfringens is a bacterium widely distributed in the environment, gastrointestinal tract of humans and animal. It is causative agent for many animal diseases, such as necrotizing enterocolitis in calves. In this study, 124 samples, including 45 fecal samples and 79 intestinal
samples of calves suspected necrotizing enterocolitis were collected from Ha Noi, Thai Nguyen, Ha Tinh, Dak Lak, Khanh Hoa and Can Tho for isolating Clostridium perfringens. The positive sample rates with Clostridium perfringens in these localities were 90%, 90%, 15%, 40%, 37.5%, and 65%, respectively. The result of this study also showed that Clostridium perfringens type A was the predominant circulating type. Among 69 isolated strains, there were 3 strains of type D (4.35%), 6
strains of type E (8.69%), 60 strains of type A (86.96%) and none of type C.