Effect of Pulsed Feeding of GIFT Strain of Tilapia in Biofloc System Using Inland Saline Water

Feed is one of the major inputs in aquaculture system and constitutes 60%–80% total production costs tilapia. Inappropriate selection feed quality feeding strategy affects utilization resulting high food conversion ratio (FCR). A 60 days experiment was conducted to evaluate growth performance immuno-physiological responses GIFT tilapia, (Oreochromis niloticus) by pulsed under biofloc culture inland saline water. For experiment, pattern followed viz., situ with daily (T1), alternate day (T2), every third (T3), no (T4), clear water control (C) each triplicates. Biofloc based treatment receiving (T1) resulted significantly ( P < 0.05 ) higher average body weight, weight gain, specific rate (SGR) compared control. T1 C showed a similar (FCR) protein efficiency (PER). Fish maintained T4 grew least survival lowest (85%). The immunological parameters significant difference id="M2"> for nitroblue tetrazolium (NBT) myeloperoxidase content whereas id="M3"> > lysozyme activity observed. Higher NBT observed treatments Activity superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) were considerably id="M4"> than Among antioxidant activities lower T1. carbohydrate metabolism enzymes lactate dehydrogenase (LDH) malate (MDH) T1, T2, T3 T4. In conclusion, in-situ found be effective improvement elicit immune-physiological tilapia using system.