title: A comparison of enrichment media for the isolation of salmonellae from seagull cloacal swabs.
abstract: The relative efficiency of three selective enrichment broths (Muller-Kauffmann tetrathionate. Rappaport's and selenite F) was investigated for the isolation of salmonellae from seagull cloacal swabs. Pre-enrichment in buffered peptone water was employed throughout the study, which involved the examination of 560 gulls, sixty (10.7%) of which were found to be carrying salmonellae. Rappaport's broth as modified by Vassiliadis for incubation at 43 degrees C (Vassiliadis et al. 1976) yielded the highest number of positive swabs (57) and the widest range of serotypes. It was significantly more efficient that either selenite F or tetrathionate broth, although the results obtained with Rappaport's broth incubated at 37 and 43 degrees C did not differ significantly (P greater than 0.5). Eleven serotypes were isolated during the study, the most prevalent being Salmonella virchow.
mesh_terms: D000818:Animals; D001717:Birds / Q000382:microbiology*; D002988:Cloaca / Q000382:microbiology*; D003470:Culture Media; D012475:Salmonella / Q000302:isolation & purification*; D012486:Salmonella typhimurium / Q000302:isolation & purification; D013696:Temperature
chemical_list: D003470:Culture Media