Biochemical variants among ovine Pasteurella multocida biovars isolated from East Azarbaijan province

In this study, biochemical variants of 24 ovine Pasteurella multocida isolates which were biotyped by microplate fermentation were studied. All isolates were taken from sheep with nasal discharge in East Azarbaijan province. Among the five identified biovars namely biovars 2, 3, 6, 7 and 11 only biovars 6 and 7 had biochemical variants. Manitol negative, manitol negative/ornitine decarboxylase negative and manitol negative maltose negative variants among biovar 6 and saccharose positive among biovar 7 are the characteristics of ovine P. multocida isolated from this province.