Enhancement of growth of tilapia Oreochromis niloticus in iso-osmotic medium
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AbstractTilapia (Oreochromis niloticus) kept in 15 ppt seawater (roughly iso-osmotic salinity) had higher growth rates than fish kept in 0 ppt (freshwater) or 30 ppt seawater, but circulating level of growth hormone was highest in fish exhibiting the poorest growth rate (30 ppt seawater). Serum thyroxine concentration was highest in 15 ppt seawater. Intestinal trypsin may play a role in promoting growth in iso-osmotic salinity since its activity was highest in fish cultured in 15 ppt seawater. The results indicate that changes in the digestive power, coupled with changes in thyroxine secretion, may account for the variations in growth rate in tilapia reared under different salinities.
All Author(s) ListWoo NYS, Ng TB, Leung TC, Chow CY
Journal nameJournal of Applied Ichthyology
Volume Number13
Issue Number2
Pages67 - 71
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesFisheries; FISHERIES; Marine & Freshwater Biology; MARINE & FRESHWATER BIOLOGY

Last updated on 2020-23-10 at 02:03