Abstract:
Mannheimia haemolytica A2, and Pasteurella multocida B2 infections are common in
small, and large ruminants worldwide. A study was conducted to determine cross
protection between M haemolytica A2, and P. multocida B2 in goats. Nine clinically
healthy goats from six to nine months old were randomly selected, and divided equally
into three groups; Group 1, and 2 which were exposed twice intranasally with formalin
killed A2 inoculum spray at two weeks interval, while Group 3 was left untreated as
negative control group. Group 1 was then challenged with live P. multocida B2 bacteria,
while Group 2 was challenged with live M haemolytica A2 organism. Results showed
that all goats from Group 1 did not survive the infection while only one goat from Group
2 died due to earlier infection prior to the treatment.
