a serological survey to determine the prevalence of infection with treponema hyodysenteriae in western australia. | a serological survey to detect antibody titres against treponema hyodysenteriae was conducted on pigs from 106 herds in western australia. titres indicating a positive result in the tests were determined by examining 400 sera from 4 herds known to be free of swine dysentery, and sera from immunised or experimentally infected pigs. samples of serum from 40 bacon-weight pigs from each of the 106 herds were then collected at 2 abattoirs. each serum was tested in enzyme-linked immunosorbent assays ( ... | 1992 | 1605788 |