Isolation and Identification of Salmonella enterica Serotype Enteritidis from a Layer Breeder Farm
摘要
Salmonella enterica serotype Enteritidis (SE) has emerged to be the most important egg-borne poisoning pathogens in European countries and the United States of America for 20 years. However, no SE isolate was reported in Taiwan. In 2002, an SE strain was isolated from routine fluff test. The source of SE was traced to a layer breeder farm. The layers in that farm showed no abnormal clinical signs but their chicks showed a little higher mortality of 2% in the first week. Several other SEs were isolated from the hens and their hatching chicks. Those SE were susceptible to ampicillin, amoxicillin, kanamycin, colistin, polymyxin B, cephalexin, nitrofuratoin, ofloxcin, ciprofloxacin and sulfamethazole/trimethoprim. Such infected layer breeders should be controlled or destroyed for its downstream layer farms and consumers' safety.