Effect Of Water Replacement Frequencies On The Growth And Survival Of Clarias Gariepunus Fingerlings

ABSTRACT

 The influence o; frequency of water replacement on growth performance and survival of Clarias gariepinus fingerlings of mean weight: ±5.55g and length ±12.5cm was investigated in the laboratory ovcra period of 14 weeks (93 clays). there was 5 (Five) treatments namely: treatment A= daily replacement: of 15 liters water. Treatment B = replacement of water every three days, treatment C= total replacement every six days, treatment D = replacement: of water every day. Treatment E = p:trli.il draining of water every day td remove faecal material and une3ten food, aid total replacement every two w&eks as these serves as the • controL Each of the treatment was replicated three times the fish were fed with well balanced artificial Feed at 5% bodyweight daily at: 070Cr hours and 1800 hours. The resufts showed that fingerlings in treatment E performed best while those of f;reatmunt D performed poorly. Statistical analysis showed no significant diffcrencä (P>O.uS) with rspet to percentage weight gain and specific growth • rate o fingerlings. However there was significant difference (P<0.05) when percentage weight gain and specific growth rate are considered between treatment A and E. generally, it was observed that the les the frequency of water replacement, tha better the growth performance and survival rate of the fish fingerlings: >