Vitamin A has been studied intensely in its application to the fields of animal and poultry nutrition. Over forty years of investigation have provided extensive data on the chemistry, analysis, deficiency symptoms and nutritional requirements of vitamin A. However, there is still a scarcity of information concerning its mode of action in the body, particularly regarding carotenoid conversion to vitamin A and its absorption, transport, storage and association with disease. As recently as twenty years ago, fish liver oils and alfalfa meals were the major sources for vitamin A supplementation. These natural concentrated sources varied in potency and activity from one batch to another. Some contained impurities which interfered with assays and contributed to the instability of vitamin A activity.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.115373 |
| Date | January 1964 |
| Creators | Burgess, Paul. L. |
| Contributors | Nikolaiczuk, N. (Supervisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science. (Department of Agriculture.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
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