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Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves
Dissertation (MSc)--University of Pretoria, 2011.
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| Format: | Thesis |
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University of Pretoria
2013
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| _version_ | 1867613503958810624 |
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| access_status_str | Open Access |
| author2 | Penzhorn, Barend Louis |
| author_browse | Penzhorn, Barend Louis |
| author_facet | Penzhorn, Barend Louis |
| collection | Thesis |
| dc_rights_str_mv | © 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria |
| description | Dissertation (MSc)--University of Pretoria, 2011. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/29672 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:37:11.641Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/29672 Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves Penzhorn, Barend Louis Crafford, Jan Ernst Latif, Abdalla A. anthonydavis@telkomsa.net Davis, Anthony John Babesia bovis Vaccination Dairy calves Babesia bigemina UCTD Dissertation (MSc)--University of Pretoria, 2011. Calves infected with Babesia bovis or Babesia bigemina between 3 and 9 months of age can develop immunity without showing overt clinical signs. This transient immunity is not dependent on maternal immunity. After 9 months of age, they are fully susceptible to challenge. Dairy calves between 2 and 3 months of age were vaccinated with B. bigemina and B. bovis live frozen vaccines (Onderstepoort Biological Products®). Two months after vaccination, 90% of calves were serologically positive on IFA test to B. bigemina, and 70% were serologically positive to B. bovis. At this age, only 17% of the control group had seroconverted to B. bigemina and none of the calves had seroconverted to B. bovis. All experimental calves maintained positive serological status to both B. bovis</i. and B. bigemina for at least 5 months after vaccination. It is sound practice to vaccinate dairy calves against babesiosis at 2–3 months of age. Endemic stability is achieved before the period of natural resistance wanes. Copyright Veterinary Tropical Diseases unrestricted 2013-09-07T16:15:17Z 2012-11-21 2013-09-07T16:15:17Z 2012-09-07 2012-11-21 2012-11-21 Dissertation Davis, AJ 2011, Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/29672 > E12/9/164/gm http://hdl.handle.net/2263/29672 http://upetd.up.ac.za/thesis/available/etd-11212012-125807/ © 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria application/pdf University of Pretoria |
| spellingShingle | Babesia bovis Vaccination Dairy calves Babesia bigemina UCTD Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves |
| title | Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves |
| title_full | Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves |
| title_fullStr | Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves |
| title_full_unstemmed | Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves |
| title_short | Serological response to early vaccination against Babesia bovis and Babesia bigemina in dairy calves |
| title_sort | serological response to early vaccination against babesia bovis and babesia bigemina in dairy calves |
| topic | Babesia bovis Vaccination Dairy calves Babesia bigemina UCTD |
| url | http://hdl.handle.net/2263/29672 http://upetd.up.ac.za/thesis/available/etd-11212012-125807/ |