An attempt to improve the immunization of sheep against heart-water by using different combinations of 3 stocks of Cowdria ruminantium |
| |
| Authors: | J L du Plessis F T Potgieter L van Gas |
| |
| Institution: | Veterinary Research Institute, Onderstepoort. |
| |
| Abstract: | Neither sheep immune to the Ball 3, the Kwanyanga or the Mara stocks of Cowdria ruminantium nor those immunized with combinations of these 3 stocks were protected against challenge with the Mali stock. Against challenge with the Welgevonden stock, however, immunization with each of the 3 combinations and with single stocks effected a protective immunity. |
| |
| Keywords: | |
|
|
