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Comparison between the effects of zilpaterol hydrochloride and Rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle
Dissertation (MSc (Agric Animal Science (Production Physiology and Product Quality))--University of Pretoria, 2021.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2022
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| _version_ | 1867613647664054272 |
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| access_status_str | Open Access |
| author2 | Webb, E.C. (Edward Cottington) |
| author_browse | Webb, E.C. (Edward Cottington) |
| author_facet | Webb, E.C. (Edward Cottington) |
| collection | Thesis |
| dc_rights_str_mv | © 2022 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 (Agric Animal Science (Production Physiology and Product Quality))--University of Pretoria, 2021. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/83939 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:28.478Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| 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:2263/83939 Comparison between the effects of zilpaterol hydrochloride and Rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle Webb, E.C. (Edward Cottington) candicestock@gmail.com Stock, Candice UCTD Animal Science Production animal physiology Zilpaterol hydrochloride R-salbutamol Beta-adrenergic agonists Feedlot cattle Finishing period Growth performance Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-03 Natural and agricultural sciences theses SDG-12 Dissertation (MSc (Agric Animal Science (Production Physiology and Product Quality))--University of Pretoria, 2021. This study was conducted on 228 typical South African feedlot steers, of which 114 steers were fed 60 mg of zilpaterol HCl per steer per day for the final 30 days of the feedlot finishing period and the other 114 steers were fed 120 mg of R-salbutamol per steer per day for the last 30 days of the feedlot finishing period. The animals were slaughtered at the same abattoir after waiting the 3-day withdrawal period of zilpaterol HCl and R-salbutamol. The recorded growth and feedlot parameters included starting weight, slaughter weight, average daily gain, live weight gain and lean gain. The recorded carcass and meat characteristics parameters included warm and cold carcass weights, carcass length, carcass fat thickness measured over the 13th rib, carcass classification score, age code as well as fat code using the current South African classification system, dressing percentage, and carcass compactness. Prof E.C. Webb, Department of Animal Science, University of Pretoria bs2026 Animal and Wildlife Sciences MSc (Agric) Animal Science: Production Physiology and Product Quality Unrestricted SDG-02: Zero hunger SDG-03: Good health and well-being SDG-12: Responsible consumption and production 2022-02-15T12:57:37Z 2022-02-15T12:57:37Z 2022-04 2021 Dissertation * A2022 http://hdl.handle.net/2263/83939 en © 2022 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 Animal Science Production animal physiology Zilpaterol hydrochloride R-salbutamol Beta-adrenergic agonists Feedlot cattle Finishing period Growth performance Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-03 Natural and agricultural sciences theses SDG-12 Comparison between the effects of zilpaterol hydrochloride and Rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle |
| title | Comparison between the effects of zilpaterol hydrochloride and Rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle |
| title_full | Comparison between the effects of zilpaterol hydrochloride and Rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle |
| title_fullStr | Comparison between the effects of zilpaterol hydrochloride and Rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle |
| title_full_unstemmed | Comparison between the effects of zilpaterol hydrochloride and Rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle |
| title_short | Comparison between the effects of zilpaterol hydrochloride and Rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle |
| title_sort | comparison between the effects of zilpaterol hydrochloride and rsalbutamol during the finishing period on the growth performance and carcass characteristics of feedlot cattle |
| topic | UCTD Animal Science Production animal physiology Zilpaterol hydrochloride R-salbutamol Beta-adrenergic agonists Feedlot cattle Finishing period Growth performance Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-03 Natural and agricultural sciences theses SDG-12 |
| url | http://hdl.handle.net/2263/83939 |