摘要
西安某奶牛场16周龄左右的犊牛发生了以出血性肠炎为主要特征的疾病。经现场调查、球虫卵检查和细菌分离与鉴定,排除了球虫、魏氏梭菌、沙门氏菌致病的可能,确定该病是由大肠杆菌引起。该菌对小鼠有很强的致病性,其O血清型为O9,可产生不耐热肠毒素,对头孢三嗪、头孢哌酮、呋喃妥因、头孢唑啉、头孢他啶、丁胺卡那、妥布霉素敏感,对链霉素、红霉素、氯霉素、氟哌酸、四环素、复合磺胺、羧苄青霉素、氨苄青霉素有耐受性。
About 16weekold calves of a cow farm in Xi'an broke out hemorrhagic enteritis. We diagnosed the illness caused by E.coli and excluded the possibilities of Coccidia, Cl.welchii and Salmonella as pathogen according to site survey,Coccidia oocystes check and bacteria isolation and identification. The isolated E.coli is serotype O9,had high pathogenicity to mice, could produce heatlabile enterotoxin and had high sensitivity to ceftriaxone,cefoperazone,nitrofurantoin,cefazolin,ceftazidime,amikacin and tobramycin, and it had resistance to streptomycin,erythromycin,norfloxacin,tetracycline,trimethoprim/sulfamethoxazole,carbenicillin and ampicillin.
出处
《动物医学进展》
CSCD
2003年第2期115-117,共3页
Progress In Veterinary Medicine
