Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets
Dissertation (MSc)--University of Pretoria, 2010.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Published: |
University of Pretoria
2013
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613629604429825 |
|---|---|
| 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 | © 2010, 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, 2010. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/29035 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:39:11.459Z |
| 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:2263/29035 Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets Erasmus, L.J. (Lourens Jacobus) andrew.campbell@dsm.com Campbell, Andrew Alan Starch diets Feedlot steers dosed Megasphaera elsdenii UCTD Dissertation (MSc)--University of Pretoria, 2010. Rumen acidosis is a common problem under feedlot conditions where cattle change from a roughage-based to a high concentrate-based diet. It is associated with an imbalance between lactic acid producing and lactic acid utilizing bacteria. Megasphaera eldenii is an important lactic acid utilizing bacteria which can now be produced for commercial use and supplemented for the prevention of lactic acid build up in the rumen and subsequent acidosis. The adaptation period is required in order for numbers of lactate utilizers such as M. elsdenii to increase to levels effective against subsequent build up of lactic acid. The purpose of this trial is to identify the effects of a strain, NCIMB 41125 (MeCH4), of Megasphaera elsdenii on the adaptation period of feedlot cattle on diets formulated for high starch levels. MeCH4 was isolated from the rumen of cattle adapted to high starch diets. By converting lactic acid in the rumen to volatile fatty acids (VFA’s) such as butyrate, M. elsdenii should be able to at least reduce the adaptation phase, if not totally eliminate the need for it without effects on intake patterns, feed conversion rates, health and carcass yield. . If results are positive, this strain of M. eldenii will have great economic implications to all feedlot farmers. There may be one major conclusion to be drawn from this trail and this was the fact that a decrease in adaptation days to reach the high concentrate grower diet had no statistically significant influence on key performance parameters relevant to the feedlot industry However, possibly the most attractive implication of these results is the lower need for roughage and therefore the implications tied in with the buying in and storage thereof. Animal and Wildlife Sciences unrestricted 2013-09-07T14:44:15Z 2010-10-25 2013-09-07T14:44:15Z 2010-09-02 2010-10-25 2010-10-25 Dissertation Campbell, AA 2010, Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/29035 > E10/735/gm http://hdl.handle.net/2263/29035 http://upetd.up.ac.za/thesis/available/etd-10252010-171426/ © 2010, 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 | Starch diets Feedlot steers dosed Megasphaera elsdenii UCTD Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets |
| title | Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets |
| title_full | Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets |
| title_fullStr | Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets |
| title_full_unstemmed | Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets |
| title_short | Optimizing the adaptation rate of feedlot steers dosed with Megasphaera elsdenii NCIMB 41125 and fed high starch diets |
| title_sort | optimizing the adaptation rate of feedlot steers dosed with megasphaera elsdenii ncimb 41125 and fed high starch diets |
| topic | Starch diets Feedlot steers dosed Megasphaera elsdenii UCTD |
| url | http://hdl.handle.net/2263/29035 http://upetd.up.ac.za/thesis/available/etd-10252010-171426/ |