Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows
Dissertation (MSc (Agric))--University of Pretoria, 2019.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2019
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613577229107200 |
|---|---|
| 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 | © 2019 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))--University of Pretoria, 2019. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/72718 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:21.509Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| 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:2263/72718 Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows Erasmus, L.J. (Lourens Jacobus) u29191433@tuks.co.za De Vos, Caitlyn UCTD Feed additive supplementation Rumen fermentation parameters Microbial crude protein Amino acid profile Fermentation dynamics Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 Dissertation (MSc (Agric))--University of Pretoria, 2019. Four late-lactation Holstein-Friesian cows were utilised in a 4 x 4 Latin square design experiment to evaluate the effect of a calcareous marine algae buffer, Acid Buf 10 (Celtic Sea Minerals), a direct-fed microbial product, AchieveFE (MicroBasics Inc.) and sodium monensin (Rumensin, Elanco Animal Health) on ruminal fermentation patterns, microbial crude protein (MCP) production, and the amino acid (AA) profile of the ruminal bacteria associated with the liquid and solid phases. The basal diet fed was a total mixed ration (TMR) comprised of 400 g/kg high quality Lucerne hay and 600 g/kg concentrates, of which 399 g/ kg of concentrate was ground corn (dry matter (DM) basis). Treatments were: (1) control diet (C), (2) control diet plus 3.75 g/kg DM of Acid Buf 10 (AB10), to achieve an intake of 90 g/cow/day, (3) control diet plus 10 g/day of AchieveFE (DFM) inserted directly into the rumen, and (4) control diet plus 10.84 mg/kg DM of monensin (MON), to achieve an intake of 260 mg/cow/day. The four experimental periods consisted of a 14 day “wash-out” period and an 11 day collection period. Cows were fed their respective TMR ad libitum twice daily at 08:00 and 14:00, with the DFM product being placed directly into the rumen daily prior to the 08:00 feeding. Cows were milked three times daily at 06:00, 12:00 and 19:00. bs2026 Animal and Wildlife Sciences MSc (Agric) Unrestricted SDG-02: Zero hunger SDG-12: Responsible consumption and production SDG-15: Life on land 2019-12-13T08:07:47Z 2019-12-13T08:07:47Z 2019/09/05 2019 Dissertation De Vos, C 2019, Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows, MSc (Agric) Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/72718> S2019 http://hdl.handle.net/2263/72718 en © 2019 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 Feed additive supplementation Rumen fermentation parameters Microbial crude protein Amino acid profile Fermentation dynamics Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows |
| title | Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows |
| title_full | Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows |
| title_fullStr | Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows |
| title_full_unstemmed | Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows |
| title_short | Effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows |
| title_sort | effect of feed additive supplementation on rumen bacterial amino acid profile and fermentation dynamics in dairy cows |
| topic | UCTD Feed additive supplementation Rumen fermentation parameters Microbial crude protein Amino acid profile Fermentation dynamics Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 |
| url | http://hdl.handle.net/2263/72718 |