Harbin, Robert (1984). Reproduction in Male Salmonids with Special Reference to the Problems and Control of Maturation in Fish Culture. PHD thesis, Aston University.
Abstract
The commercial problems accompanying the sexual maturation of male salmonids include a reduction in growth rate, the appearance of secondary sexual characteristics and changes in body composition. Information is presented on the development and extent of these changes among maturing rainbow trout and the endocrine control system by which such effects are controlled is reviewed. In particular, the roles of the naturally occurring androgens, testosterone and 11l-ketotestosterone, are examined. When administered to immature rainbow trout 11-ketotestosterone was more potent in inducing male secondary sexual characteristics, while testosterone exerted a greater depression of dry matter digestibility. Changes in this latter parameter are suggested to be an important component of the decreased food conversion efficiency observed in mature fish...
| Publication DOI: | https://doi.org/10.48780/publications.aston.ac.uk.00010556 |
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| Divisions: | College of Health & Life Sciences > School of Biosciences |
| Additional Information: | Copyright © Robert Harbin, 1984. Robert Harbin asserts their moral right to be identified as the author of this thesis. This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from the thesis and no information derived from it may be published without appropriate permission or acknowledgement. If you have discovered material in Aston Publications Explorer which is unlawful e.g. breaches copyright, (either yours or that of a third party) or any other law, including but not limited to those relating to patent, trademark, confidentiality, data protection, obscenity, defamation, libel, then please read our Takedown Policy and contact the service immediately. |
| Institution: | Aston University |
| Uncontrolled Keywords: | Reproduction,male salmonids,fish culture |
| Last Modified: | 20 Mar 2025 14:12 |
| Date Deposited: | 10 Jan 2011 13:43 |
| Completed Date: | 1984-01 |
| Authors: |
Harbin, Robert
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