LAJU PERTUMBUHAN, KELANGSUNGAN HIDUP DAN KOMPOSISI KIMIA IKAN NILA (Oreochromis niloticus) HASIL REKAYASA  DARI AIR TAWAR KE AIR LAUT

Johanna L. Thenu; Lexon H. J. Tinglioy

doi:10.30598/jinasua.2021.1.1.40

Johanna L. Thenu Balai Pelatihan dan Penyuluhan Perikanan Ambon
Lexon H. J. Tinglioy Balai Pelatihan dan Penyuluhan Perikanan Ambon

DOI: https://doi.org/10.30598/jinasua.2021.1.1.40

Keywords: aklimatisasi, ikan nila, laju pertumbuhan, kelangsngan hidup, komposisi kimia, rekayasa

Abstract

Tilapia (Oreochromis niloticus) is one of the most popular fish species and has high economic value. Increased demand for this type of fish must be matched by cultivation efforts. Limited land for cultivation ponds, so it is necessary to look for alternatives, one of which is cultivation in seawater floating marine cages. This study aims to determine the manipulation process of freshwater tilapia into seawater, the rate of growth and survival, and analysis of its chemical composition. The research used was an experimental method. The results of measuring water quality including salinity increased by 3 ppt per day, temperatures ranged from 27-30 ^OC, DO was between 7.0-7.5 mg/L, pH between 7,2-7,6. The absolute weight and length were 408.5 g and 26 cm, respectively, the growth rate was 2.27%, and the survival rate was 85-90%. The chemical composition values â€‹â€‹include moisture content of 71.59%, ash 1.54%, fat 4.74%, 21.3% protein, and 0.83% carbohydrates. The results showed that freshwater tilapia can be manipulated to live in seawater and have a good growth and survival rate and have a high chemical composition, especially protein and fat.

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