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- Title
Effect of dietary iron levels on growth, body composition and intestinal enzyme activities of juvenile Jian carp ( Cyprinus carpio var. Jian) J. Ling et al. Influence of iron on Jian carp growth performance and intestinal enzyme activity.
- Authors
LING, J.; FENG, L.; LIU, Y.; JIANG, J.; JIANG, W.-D.; HU, K.; LI, S.-H.; ZHOU, X.-Q.
- Abstract
A 60-day feeding trial was carried out to investigate the effect of iron on growth, body composition and digestive enzyme activities. Diets with seven levels of iron (53.9, 90.0, 115.6, 146.1, 176.0, 215.8 and 266.0 mg iron kg diet) were fed to Jian carp (initial weight 11.4 ± 0.0 g). Per cent weight gain (PWG), feed efficiency (FE) and protein efficiency ratio were the lowest in fish fed the basal diet ( P < 0.05). Body protein content was increased with the increasing iron levels ( P < 0.05), but moisture, lipid and ash of fish were not significantly affected by dietary iron levels ( P > 0.05). Activities of trypsin, lipase, α-amylase, Na, K-ATPase, alkaline phosphatase and gamma-glutamyl transpeptidase were improved with increasing dietary iron levels. Serum iron were significantly enhanced with dietary iron levels up to 146.1 mg iron kg diet, and plateaued. In conclusion, iron improved digestive enzyme activities of juvenile Jian carp and the dietary iron requirement for serum iron of juvenile Jian carp (11.4-64.0 g) was 147.4 mg iron kg diet with ferrous fumarate as the iron source.
- Subjects
CARP; FISH growth; IRON; CYPRINUS; ENZYMES
- Publication
Aquaculture Nutrition, 2010, Vol 16, Issue 6, p616
- ISSN
1353-5773
- Publication type
Article
- DOI
10.1111/j.1365-2095.2009.00699.x