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The physical and chemical parameters of water in holding tanks of Clarias gariepinus induced with ovaprim and Ovulin hormones were evaluated. The study was done in the hatchery unit of Department of Fisheries, University of Port Harcourt, Choba, Nigeria, and lasted for a period of four weeks. The result obtained showed that dissolved oxygen (DO) ranged between 3.82±0.88mg/l and 6.36 ±1.85mg/l for ovulin and 3.82±0.mg/l and 5.83±1.67mg/l for ovaprim. Temperature values ranged from 25.89±0.31C to 26.00±0.00C. Water hardness, chloride, pH, alkalinity and ammonia values in all the treatments were constants and were respectively:17.10±0.00mg/l, 30.00±0.00mg/l 6.50±0.00, 17.100±0.00 and 0.001±0.00mg/l. Application of the hormones did not impact negatively on the physicochemical parameters as they were within the required levels recommended for a successful fish reproduction.

Physico-Chemical Parameters of Water in Holding Tanks of Clarias gariepinus Induced with Ovaprim and Ovulin Hormones