Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Production and egg quality of Lohmann Brown Lite laying hens as influenced by source and dietary inclusion concentration of zinc, copper, and manganese
Dissertation (MSc (Agric) Animal Science: Animal Nutrition)--University of Pretoria 2022.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2023
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613685895135232 |
|---|---|
| access_status_str | Open Access |
| author2 | Janse van Rensburg, Christine |
| author_browse | Janse van Rensburg, Christine |
| author_facet | Janse van Rensburg, Christine |
| 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: Animal Nutrition)--University of Pretoria 2022. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/89021 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:04.964Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| 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:2263/89021 Production and egg quality of Lohmann Brown Lite laying hens as influenced by source and dietary inclusion concentration of zinc, copper, and manganese Janse van Rensburg, Christine petrus@eaglespride.co.za Engelbrecht, Petrus UCTD Mineral micronutrients Laying hens Egg production Egg quality Organic minerals 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: Animal Nutrition)--University of Pretoria 2022. The egg formation process is complex and can be influenced by a multitude of factors, one of which includes the availability of vital trace minerals in the hens’ diet. Although calcium carbonate makes up the largest part of the eggshell, trace minerals such as zinc, copper, and manganese influence the structure and the strength of the shell. Trace minerals also act as catalysts in various enzymatic processes important for normal homeostasis and egg production. Adding trace minerals to the diets of laying hens, has been a longstanding practice, these minerals were traditionally sourced from various sulphide and oxide salts. However, in the light of the significant increases in the modern layer hens’ egg production rate and productive lifespan, the nutritional requirements for trace minerals may not be met by simply increasing the mineral inclusion level in the diet, as this does not necessarily correlate with an increase in the absorption of the mineral. Organic minerals, especially chelated methionine mineral sources, may ameliorate this problem, due to minerals being absorbed inadvertently through amino acid uptake regulators Eagles Pride UP Novus bs2026 Animal and Wildlife Sciences MSc (Agric) Animal Science: Animal Nutrition Unrestricted SDG-02: Zero hunger SDG-03: Good health and well-being SDG-12: Responsible consumption and production 2023-01-30T10:18:06Z 2023-01-30T10:18:06Z 2023 2022 Dissertation * A2023 https://repository.up.ac.za/handle/2263/89021 10.25403/UPresearchdata.21975503 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 Mineral micronutrients Laying hens Egg production Egg quality Organic minerals Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-03 Natural and agricultural sciences theses SDG-12 Production and egg quality of Lohmann Brown Lite laying hens as influenced by source and dietary inclusion concentration of zinc, copper, and manganese |
| title | Production and egg quality of Lohmann Brown Lite laying hens as influenced by source and dietary inclusion concentration of zinc, copper, and manganese |
| title_full | Production and egg quality of Lohmann Brown Lite laying hens as influenced by source and dietary inclusion concentration of zinc, copper, and manganese |
| title_fullStr | Production and egg quality of Lohmann Brown Lite laying hens as influenced by source and dietary inclusion concentration of zinc, copper, and manganese |
| title_full_unstemmed | Production and egg quality of Lohmann Brown Lite laying hens as influenced by source and dietary inclusion concentration of zinc, copper, and manganese |
| title_short | Production and egg quality of Lohmann Brown Lite laying hens as influenced by source and dietary inclusion concentration of zinc, copper, and manganese |
| title_sort | production and egg quality of lohmann brown lite laying hens as influenced by source and dietary inclusion concentration of zinc copper and manganese |
| topic | UCTD Mineral micronutrients Laying hens Egg production Egg quality Organic minerals Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-03 Natural and agricultural sciences theses SDG-12 |
| url | https://repository.up.ac.za/handle/2263/89021 |