EFFECT OF SOME ENVIRONMENTAL FACTORS ON THE INCUBATION OF JUVENILE EEL (ANGUILLA MARMORATA QUOY & GAIMARD, 1824) WITH THREE DIFFERENT FOODS
Abstract
Study on the effect of temperature and pH on rearing of Anguilla marmorata Quoy & Gaimard, 1824 with weight from 20-50g/ind with 3 different foods of earthworms, tilapia and fresh sea fish. Stocking density of 20 ind/m2, cultured in cement tanks with oxygen aeration. Result of 6 months of incubation, the suitable temperature for juvenile eels to grow from 27.41 ± 1.140C to 27.54 ± 1,080C and pH 7.83 ± 0.22 to 7.89 ± 0.27. The weight of juvenile eels after 6 months of incubation in 3 experiments with 3 different foods reached 109.66-126.34g and the length was 34-36cm. The PCR feed rate of eels in the three experiments from 5.54 to 5.87 and the average survival rate was 84.11%.