Diets containing unheated and heat polymerized herring and linseed oils were fed to male white rats. The oils were incorporated in the diets at 20$ (herring and linseed) and 10$ (linseed) levels. Linseed oil, segregated by propanol or with additions of antioxidants were tested. Supplements of sheep feces and dried brewers yeast were fed with linseed oil diets to determine their prophylactic and curative properties. Heat polymerization decreased the nutritive value of the oils as assessed by the growth rates, feed consumption, and the physical condition of the animals. Increasing the heated oil content of the diet from 10 to 20% resulted in lower growth rates. Propanol segregation or the additions of antioxidants to the heated linseed oil showed no effect on the nutritive value. Yeast was found to have slight prophylactic and curative properties when fed with heated oil diets.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.122681 |
| Date | January 1950 |
| Creators | Clark, Barbara Elizabeth |
| Contributors | Crampton, E. (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 Nutrition.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000591951, Theses scanned by McGill Library. |
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