Evaluation of an aquaponic system in the integral farm of the PEAMA Sumapaz

Abstract

Was evaluated the growth of the common carp (Cyprinus carpio), lettuce (Lactuca sativa), spinach (Spinacia oleracea) during 12 weeks, incorporating the supply of three alimentary diets. Were used three tanks, in which they have deposited 28 fishes, 20 plants of lettuce, and 20 plants of spinach, for each tank and additionally were planted a control group of these plants. The diets were handled with concentrated food and duckweed (Lemna minor), in concentrations of 100% concentrated, 70% concentrated and 30% duckweed, and 50% concentrated and 50% duckweed. Weekly it was measured the longitude, width, and weight of the fishes, in the plants the heights, number of leaves, and in the water the quantity of ammonium, nitrite, nitrate, pH, and temperature. At the end of the experimental project was evident, that there were no considerable differences in the growth of the fishes, nevertheless the fishes of three tank they had a longitude of 0.24 cm on average with tank 1. The one tank allowed that the number of leaves and height of the lettuce to have a significant difference in relation with the control group and the plants of the spinach were better developed in the control group than in the plants of an aquaponic system.