An attempt to improve the immunization of sheep against heart-water by using different combinations of 3 stocks of Cowdria ruminantium
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- PMID: 2234869
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An attempt to improve the immunization of sheep against heart-water by using different combinations of 3 stocks of Cowdria ruminantium
Onderstepoort J Vet Res.
1990 Sep.
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.
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