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The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis)
Dissertation (MSc)--University of Pretoria, 1999.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2017
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| _version_ | 1867613525494464512 |
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| access_status_str | Open Access |
| author2 | Skinner, J.D. (John Dawson), 1932- |
| author_browse | Skinner, J.D. (John Dawson), 1932- |
| author_facet | Skinner, J.D. (John Dawson), 1932- |
| collection | Thesis |
| dc_rights_str_mv | © 2017 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, 1999. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/61736 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:32.074Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| 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:2263/61736 The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis) Skinner, J.D. (John Dawson), 1932- Meltzer, David George Anton Cilliers, Stephan Dirk UCTD Dissertation (MSc)--University of Pretoria, 1999. Plasma progesterone concentrations were used as a measure to determine the "ram effect" on nine cycling springbok ewes. Blood was collected biweekly, prior to and after ram introduction. Ewes were subjected to the ram for a period of forty two days. Blood was analysed for plasma progesterone by means of radioimmunoassays. No significant changes in the plasma progesterone concentrations were detected. Superficially, a reduction in the variation of the follicular phase of the ewes oestrous cycle was noted for before- to after ram introduction. However, possibly because of a too small sample size, no statistical significance was found. It is suggested that the "ram effect" on aseasonal cycling species may only have a synchronisation effect (reduction in the variation of time between the follicular phase of females) but more individuals should be used in future experiments to make any clear and definite conclusions. Furthermore other hormones such as e.g. luteinizing hormone, which may be less affected by translocation and handling stress, should also be used to determine the "ram effect" on aseasonally breeding wild ungulates. Veterinary Wildlife Unit MSc Unrestricted 2017-08-18T12:12:12Z 2017-08-18T12:12:12Z 1999 1999 Dissertation Cilliers, SD 1999, The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis), MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/61736> http://hdl.handle.net/2263/61736 en © 2017 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 | UCTD The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis) |
| title | The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis) |
| title_full | The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis) |
| title_fullStr | The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis) |
| title_full_unstemmed | The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis) |
| title_short | The ram effect on the reproductive cycle of the springbok ewe (antidorcas marsupialis) |
| title_sort | ram effect on the reproductive cycle of the springbok ewe antidorcas marsupialis |
| topic | UCTD |
| url | http://hdl.handle.net/2263/61736 |