Effect of Feeds on Growth and Survival of Juvenile Hippocampus kuda Bleeker

LUO Jie; LI Feng; LIU Hao; CAO Fujun; WANG Zhongduo

Abstract：In this study, we observed the effect of different feeds on the growth and survival of justhatched and breeding juvenile Hippocampus kuda under laboratory conditions.Four feeds were feeding, respectively, which included Artemianauplii (A) , rotifers (B) , copepods nauplii (C) , and copepods nauplii+ Moina mongoica nauplii (D) as the initial diets of just-hatched juvenile Hippocampus kuda (average body length 0.85±0.03 cm) .After breeding for 20 days, we found that the body length and survival rate of juvenile H.kuda was not different among B, C and D;the body length (2.53±0.07 cm) and survival rate (67.0±5.0％) were the lowest in A, which were similar to those of B, C and D (P＞0.05) .The juvenile H.kuda at 20 days of age (average body length, 2.72±0.04 cm) were divided into E, F and G groups, which were fed with mysis (or post larvae) Litopenaeus vannamei, Myss spp.and adult Artemiafor 60 days.The results showed that the body length (7.29±0.07 cm) and survival rate (88.5±5.6％) of juvenile H.kuda were the highest when fed with mysis (or post larvae) Litopenaeus vannamei, and the lowest (body length 6.99±0.12 cm, survival rate 71.5±5.1％) when fed with adult Artemia.The highest growth rate of body length was observed at 3.0-5.5 cm of juvenile H.kuda, and the daily growth rate decreased with the increase of body length, which were significantly different among groups (P＜0.05) .