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Effect of dietary vitamin C supplementation on the oxygen consumption, ammonia-N excretion and Na+/K+ ATPase of Macrobrachium nipponense exposed to ambient ammonia
- Source :
-
Aquaculture . Apr2003, Vol. 220 Issue 1-4, p833. 9p. - Publication Year :
- 2003
-
Abstract
- The 96-h LC50 of ammonia-N and the effects of dietary vitamin C on oxygen consumption, ammonia-N excretion and Na+/K+ ATPase activity of Macrobrachium nipponense exposed to ambient ammonia were investigated. The results showed that the 96-h LC50 of ammonia-N was 36.6 mg lā1 for the freshwater prawn, M. nipponense, at pH 8.0. When prawns were exposed to high ambient ammonia-N concentrations, the oxygen consumption rate increased and ammonia excretion decreased. Dietary vitamin C supplementation led to higher oxygen consumption and lower ammonia excretion. Na+/K+ ATPase activity increased with increased ambient ammonia-N exposure in the range of 0ā18.3 mg lā1, and then was reduced at ambient ammonia-N 36.6 mg lā1. Na+/K+ ATPase activities of prawns fed a vitamin C-supplemented diet were significantly lower than those of prawns fed a diet which was not supplemented with vitamin C. [Copyright &y& Elsevier]
- Subjects :
- *MACROBRACHIUM
*VITAMIN C
Subjects
Details
- Language :
- English
- ISSN :
- 00448486
- Volume :
- 220
- Issue :
- 1-4
- Database :
- Academic Search Index
- Journal :
- Aquaculture
- Publication Type :
- Academic Journal
- Accession number :
- 9289027
- Full Text :
- https://doi.org/10.1016/S0044-8486(02)00536-7