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The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys Natalensis
Dissertation (MSc (Zoology))--University of Pretoria, 2006.
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| Format: | Thesis |
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University of Pretoria
2013
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| _version_ | 1867613652930002945 |
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| access_status_str | Open Access |
| author2 | Van Aarde, Rudi J. |
| author_browse | Van Aarde, Rudi J. |
| author_facet | Van Aarde, Rudi J. |
| collection | Thesis |
| dc_rights_str_mv | © 2000, 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 (Zoology))--University of Pretoria, 2006. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/30145 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:39:33.692Z |
| 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:2263/30145 The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys Natalensis Van Aarde, Rudi J. upetd@up.ac.za Lamb, Caroline Elizabeth Rodents UCTD Dissertation (MSc (Zoology))--University of Pretoria, 2006. Captive multi-mammate mice, Mastomys natalensis, were paired and kept on one of three treatment diets (low, medium and high protein) in order to assess differential maternal investment in the sexes, and sex-specific resource allocation of offspring. The influence of maternal dietary protein content on maternal reproductive performance, sex-specific body composition of pups and pup growth from birth to weaning was determined. Mothers on the high protein diet were larger than those on the lower protein diets, and produced more male than female offspring. Mothers on the lower protein diets did not produce sex-biased litters. Maternal dietary protein intake did not significantly influence litter size or the interval between litters. Litters produced by mothers on the medium (15%) protein diet were significantly larger than those produced by mothers on the low (10%) protein diet. There were no sex-specific differences in body size or body tissue composition of pups at birth of at weaning within each treatment group. At weaning, pups in the 20% protein treatment group had proportionately greater amounts of lean tissue and less body lipid reserves than pups in the 10% protein treatment group. Pups in the 20% protein treatment group were also larger, and had faster growth rates, than those in the 10% protein treatment group. Weaned pups in the 15% protein treatment group had the fastest growth rates and greatest energetic contents of all of the treatment groups. These results suggest that larger mothers on the high (20%) protein diet show differential investment in the sexes, not by allocating more resources to individuals of that sex, but by producing more male than female offspring. Maternal dietary protein intake did not appear to influence the reproductive output of mothers, but did affect pup mass, growth rates and body composition which would have implications for their future success and survival. Zoology and Entomology unrestricted 2013-09-07T18:06:13Z 2006-12-06 2013-09-07T18:06:13Z 2000-04-01 2006-12-06 2006-12-06 Dissertation Lamb, CE 2000, The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys natalensis, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/30145 > H578/ag http://hdl.handle.net/2263/30145 http://upetd.up.ac.za/thesis/available/etd-12062006-122829/ © 2000, 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 | Rodents UCTD The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys Natalensis |
| title | The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys Natalensis |
| title_full | The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys Natalensis |
| title_fullStr | The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys Natalensis |
| title_full_unstemmed | The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys Natalensis |
| title_short | The influence of maternal protein intake on aspects of sex-specific foetal and neonatal development in Mastomys Natalensis |
| title_sort | influence of maternal protein intake on aspects of sex specific foetal and neonatal development in mastomys natalensis |
| topic | Rodents UCTD |
| url | http://hdl.handle.net/2263/30145 http://upetd.up.ac.za/thesis/available/etd-12062006-122829/ |