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Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle
Dissertation (MScAgric)--University of Pretoria, 2015.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2015
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| _version_ | 1867613695703515136 |
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| access_status_str | Open Access |
| author2 | Erasmus, L.J. (Lourens Jacobus) |
| author_browse | Erasmus, L.J. (Lourens Jacobus) |
| author_facet | Erasmus, L.J. (Lourens Jacobus) |
| collection | Thesis |
| dc_rights_str_mv | © 2015 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 (MScAgric)--University of Pretoria, 2015. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/50700 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:14.504Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| 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:2263/50700 Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle Erasmus, L.J. (Lourens Jacobus) u27014119@tuks.co.za Van Niekerk, Willem A. Miles, Jonathan UCTD Natural fermentation liquid feed additive beef cattle feedlot cattle volatile fatty acids Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-13 Dissertation (MScAgric)--University of Pretoria, 2015. As feed costs continue to rise, new technologies that will improve feed efficiency in a safe and consistent manner will become more critical for beef cattle production. With this in mind, two experiments were conducted. Experiment 1, a randomized complete block design study utilizing 144 Bonsmara-type steers (233 ± 0.8 kg BW) was conducted to examine the effect of a liquid Lactobacillus fermentation prototype (LFP; Diamond V, Cedar Rapids, IA) on performance of feedlot cattle. The 134 day study was conducted on a commercial beef research facility in South Africa. Upon arrival, cattle were processed and allocated to a free-range pasture for 8 d. On d 9, cattle were further processed and then blocked by arrival body weight and randomly assigned to one of 3 treatments with 8 pens per treatment and 6 steers per pen. Dietary treatments included a control diet that contained 0, 5, or 10 g LFP per head daily. Treatments were provided a in starter (d 9 to 29), grower (d 30 to 43) and finisher diet (d 44 to 134). The cattle were then slaughtered and carcasses data obtained. Experiment 2, a 3x3 Latin Square design conducted with three Beefmaster steers (700kg ±20kg) fitted with ruminal cannulae to establish a possible mode of action of the LFP supplement. Rumen fermentation parameters namely VFA concentration, rumen NH3-N, ruminal pH, lactic acid concentration and NDF disappearance were measured. In experiment 1 no differences were detected (P > 0.05) among treatments for BW gain, ADG, DMI or any of the carcass traits that were measured. Overall, (d 9 to 134), FCR was improved (P = 0.03) for 5 g LFP supplemented steers compared with those receiving 0 or 10 g LFP (4.70 vs. 4.82, 4.86). No differences in FCR, however, were reported, between treatment groups, in each individual feeding phase. Results from experiment 1 suggest that LFP does improve feed efficiency of beef cattle fed a typical South African feedlot diet and that the effect was dose dependent. Results from experiment 2 showed no differences in any of the rumen fermentation parameters that we measured. Further research on the mode of action of LFP is warranted. tm2015 bs2026 Animal and Wildlife Sciences MScAgric Unrestricted SDG-02: Zero hunger SDG-12: Responsible consumption and production SDG-13: Climate action 2015-11-25T09:47:20Z 2015-11-25T09:47:20Z 2015/09/01 2015 Dissertation Miles, J 2015, Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle, MScAgric Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/50700> S2015 http://hdl.handle.net/2263/50700 en © 2015 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 Natural fermentation liquid feed additive beef cattle feedlot cattle volatile fatty acids Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-13 Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle |
| title | Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle |
| title_full | Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle |
| title_fullStr | Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle |
| title_full_unstemmed | Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle |
| title_short | Effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle |
| title_sort | effect of a natural fermentation liquid supplement on health performance carcass characteristics and rumen fermentation dynamics in beef feedlot cattle |
| topic | UCTD Natural fermentation liquid feed additive beef cattle feedlot cattle volatile fatty acids Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-13 |
| url | http://hdl.handle.net/2263/50700 |