Campylobacter species isolated from swine with lesions of proliferative enteritis.

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Abstract
Campylobacter spp. were isolated from 93 (48.4%) out of 196 pigs in which proliferative enteritis (PE) was detected at an abattoir in Kagoshima City. Three species of Campylobacter were identified as C. sputorum mucosalis (CSM), C. hyointestinalis (CHI) and C. coli (CCO) on the basis of biochemical characteristics. From 51 specimens (54.9%) CSM was isolated, CHI was from 23 specimens (24.7%) and CCO was from 7 specimens (7.5%). From 9 specimens (9.6%) CSM and CHI were isolated simultaneously. Simultaneous isolation of CSM and CCO, and that of CHI and CCO were seen in 1 (1.1%) and 2 specimens (2.2%), respectively. Viable bacterial count/g of affected mucosa ranged 104 to 108 CFU. Of the positive specimens > 80% were involved in the range of 106 to 108 CFU. The presence of 4 different serovars of CSM in addition to serovar A was suggested. Strains other than serovar A had narrow range of growth temperature around 37.degree. C and their growth was inhibited by the presence of triphenyl tetrazolium chloride. Sera (45) of pigs bred in three farms, where CSM and CHI were thought to be prevailing, were subjected to the agglutination test to determine antibody titers against CSM and CHI. Pigs (21) had high agglutinin titer of > 1:80 against CSM. Only 2 pigs had high titer against CHI.