Journal of Nutrition OpenSOurce Diets- www.ResearchDiets.com

Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
QUICK SEARCH:   [advanced]


     

Journal of Nutrition Vol. 111 No. 1 January 1981, pp. 134-140
Copyright © 1981 by American Society for Nutrition
This Article
Right arrow Full Text (PDF)
Right arrow Purchase Article
Right arrow View Shopping Cart
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Jeng, S. S.
Right arrow Articles by Sun, L. T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Jeng, S. S.
Right arrow Articles by Sun, L. T.

Effects of Dietary Zinc Levels on Zinc Concentrations in Tissues of Common Carp1

Sen Shyong Jeng and Lian Tien Sun

Kaohsiung Institute of Marine Technology, Chi-Chin, Kaohsiung, Taiwan, Republic of China

Common carp always has higher zinc concentration in viscera than other carps. To determine the relationship between the dietary zinc level and zinc concentration in common carp, the fish were fed diets containing 17, 294, 1,007 and 1,974 ppm zinc for 8 weeks, and the zinc concentration in each tissue was measured. It was found that the group of fish fed 17 ppm zinc had the highest growth rate. When the dietary concentration of zinc was lower than 294 ppm, the zinc concentrations in the tissues were similar during the 8 weeks of experiment. The zinc accumulated in the fish when the dietary zinc concentration was higher than 1,007 ppm. Zinc accumulated first in the digestive tract, then in the skeletal tissues and then in skin and muscle. Common carp and silver carp were fed the same diet from hatchling till adult. The results indicated that no matter whether the feed was natural food or artificial feed containing 300 ppm of zinc or artificial feed containing 25 ppm of zinc, the zinc concentrations in common carp were several times higher than silver carp. We concluded that the fact that common carp had higher zinc concentrations than other carps was not caused by the diet, but might arise from the fact that the absorption rate of zinc was higher.

KEY WORDS: • zinc • carp

1 This study was supported by a grant from National Science Council, R. O. C., Project No. NSC-68B-0409-18(01).

Manuscript received 8 February 1980.




Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]