Journal
JOURNAL OF APPLIED ICHTHYOLOGY
Volume 25, Issue 4, Pages 428-431Publisher
WILEY
DOI: 10.1111/j.1439-0426.2009.01210.x
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Funding
- National Natural Science Foundation of China [30771672]
- National D & R Center for Main Freshwater Fishes
- Ministry of Science and Tehcnology of China [2001BA505B06]
- Chinese Academy of Sciences [KSCX2-SW-323]
- Hubei Science and Technology Department [2005ABB026]
- Institute of Hydrobiology
- Chinese Academy of Sciences
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P>An 83-day growth trial was conducted using a flow-through system to examine the effects of different dietary iron levels on growth and hepatic iron concentration in juvenile gibel carp (Carassius auratus gibelio). Six purified diets supplemented with different levels of iron (0, 10, 30, 60, 100 and 200 mg kg(-1)) (as ferrous sulfate) were fed to triplicate groups of fish (initial weight 2.12 +/- 0.00 g per fish). The results showed that the addition of iron to the basal diet did not significantly affect the specific growth rate (SGR), feed efficiency (FE), survival, red blood cell amount (RBC), hemoglobin content (Hb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) or mean corpuscular hemoglobin concentration (MCHC). Hepatic iron concentration and hematocrit (Hct) were significantly influenced by dietary iron level (P < 0.05). On the basis of the iron concentration for the maintenance of optimum hepatic iron concentration and Hct, it was concluded that the dietary iron concentration of juvenile gibel carp should be not less than 202 mg Fe kg(-1) diet.
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