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Effects of short- and long-term feeding of zinc oxide-supplemented diets on the mature, female domestic fowl with special reference to tissue mineral content

Published online by Cambridge University Press:  09 March 2007

N. Jackson ,
S. W. Gibson  and
M. H. Stevenson
N. Jackson
Affiliation:
Agricultura1 and Food Chemistry Research Division, Department of Agriculture for Northern Ireland The Queen's University of Belfast, Newforge Lane, Belfast BT9 5PX
S. W. Gibson
Affiliation:
The Queen's University of Belfast, Newforge Lane, Belfast BT9 5PX
M. H. Stevenson
Affiliation:
Agricultura1 and Food Chemistry Research Division, Department of Agriculture for Northern Ireland The Queen's University of Belfast, Newforge Lane, Belfast BT9 5PX
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Abstract

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1. In Expt 1, the effects on laying hens of diets supplemented with zinc oxide providing up to 20 gadded zinc/kg were compared. In Expt 2 the diets contained up to 6 g added Zn/kg.

2. In both experiments, food intake, body-weight, egg number, and liver, oviduct and ovary weights/kg body-weight were significantly reduced by added ZnO; gizzard weight/kg body-weight was significantly increased. In Expt 2, pancreas weight was significantly reduced by added ZnO.

3. Liver, kidney and pancreatic Zn and iron concentrations were significantly elevated in both experiments.

4. In both experiments, liver, kidneys and pancreatic copper concentrations gave quadratic responses to added ZnO.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 55 , Issue 2 , March 1986 , pp. 333 - 349
Copyright
Copyright © The Nutrition Society 1986

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