20 study on the culture technique in the middle stage and the growing character of Apostichopus japonicus

The culture technique in the middle stage and the growing character of Apostichopus japonicus were studied. Artificial fodder was used completely to cultivate the baby of the Apostichopus japonicus by the well of sea water in 60 days. Their size grew from 1310 ind./kg to 322 indikg.Their weight increased from 78 kg to 305 kg. The life rate was 96.4%.The food coefficient was 1.76.The growth of the 2-3cm baby of the Aposticlzopus japonicus was the quickest. It has 4.3% that the baby of Apostichopus japonicus that didn't develop or grew little. The conditions of the water of the culture: the salinity was 24.795 plus or minus 0.015; the temperature was 14.6 15.2 degree C; DO was 6-9 mg/L; pH was 7.2-7.6; Ammonium was less than 0.2 mg/L.