The use of kailan ( Brassica oleracea L.), lettuce ( Lactuca sativa L.) and pakcoy ( Brassica rapa L.) in the cultivation of striped catfish ( Pangasianodon hypophthalmus) aquaponic system on blood glucose levels and oxygen consumption levels

In striped catfish cultivation water quality greatly affects the condition of fish. The use of an aquaponic system can improve the water quality, because the basic principle of aquaponics is to utilize fish waste and fish feed residues that are not consumed and it can be used as a nutrients for kailan, lettuce and pakcoy. The purpose of this study was to determine whether the three plants can affect blood glucose levels and the level of oxygen consumption of catfish. The research method using an experimental method with a Completely Randomized Design (CRD) consisting of 4 treatments and 5 replications. At P0 are control (without plants), P1 (kailan), P2 (lettuce), and P3 (pakcoy). The main parameters observed were blood glucose levels and oxygen consumption levels. While the supporting parameters are measurement of temperature, DO, pH, plant measurements at the beginning and end of the study. The results showed that there was a significant difference (p<0.05) on blood glucose levels and oxygen consumption levels in aquaponic system cultivation. The treatment that gave the best value for blood glucose levels and oxygen consumption was the use of lettuce plants (P2).