Samples of faeces and serum were collected from pigs of various ages on 21 farms. Faecal samples were cultured on trypticase soy agar containing 5% citrated bovine blood and 400 microgram per ml spectinomycin, incubated at 42 degrees C in Gaspak jars under an atmosphere of 80% hydrogen: 20% carbon dioxide. Antibody titres to Treponema hyodysenteriae were determined by a microtitration agglutination method using merthiolate-inactivated whole cell antigen prepared from a beta- haemolytic isolate. Results indicated that mean titres in pigs from which beta- haemolytic T hyodysenteriae was isolated were significantly higher than in pigs which yielded isolates of weak beta- haemolytic T innocens or in culturally negative pigs (P less than 0.0225). Mean titres of herds where beta- haemolytic T hyodysenteriae was isolated were significantly higher (P less than 0.005) than the mean titres of either of the other two groups. However, mean titres of herds where no isolates were obtained were not significantly different from mean titres of herds where weak beta- haemolytic T innocens was isolated.
- British Veterinary Association. All rights reserved.
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.