Hostname: page-component-76d6cb85b7-rxvq6 Total loading time: 0 Render date: 2026-07-11T18:56:08.175Z Has data issue: false hasContentIssue false

The influence of vitamin A status on the response of chickens to aflatoxin B1 and changes in liver lipid metabolism associated with aflatoxicosis

Published online by Cambridge University Press:  09 December 2008

W. L. Bryden
Affiliation:
Department of Biochemistry and Nutrition, University of New England, Armidale, NSW 2351, Australia
R. B. Cumming
Affiliation:
Department of Biochemistry and Nutrition, University of New England, Armidale, NSW 2351, Australia
D. Balnave
Affiliation:
Department of Biochemistry and Nutrition, University of New England, Armidale, NSW 2351, Australia
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the 'Save PDF' action button.

1 A series of experiments were conducted to investigate the effects of dietary retinol status on chickens ingesting aflatoxin B1. The effects of dietary supplementation with biotin and α-tocopherol were also examined.

2. Aflatoxin B1 levels greater than I mg/kg diet had a detrimental effect on ‘liveability’, body-weight gain, food intake and food conversion efficiency. When fed for more than 2 weeks aflatoxin increased relative liver weight and liver lipid concentration. These effects were less pronounced with avitaminotic A chickens.

3. A synergistic effect on hydropericardium development was observed between aflatoxin B, and retinol. This effect was not observed when the dietary level of α-tocopherol was increased tenfold.

4. The specific activities of certain hepatic lipogenic and amino acid-metabolizing enzymes were influenced by aflatoxin ingestion. A reduction in lipogenic enzyme activity was observed before a reduction in the activities of amino acid-metabolizing enzymes.

5. Liver fatty acid composition was significantly influenced by aflatoxin B1. The extent of these changes was reduced by the inclusion of additional dietary biotin.

Information

Type
Papers on General Nutrition
Copyright
Copyright © The Nutrition Society 1979