›› 2018, Vol. 30 ›› Issue (4): 548-553.DOI: 10.3969/j.issn.1004-1524.2018.04.04

• Animal Science • Previous Articles     Next Articles

Effect of culture density, size and depth layer on growth of Apostichopus japonicas in shallow cages

HU Yuan1, 2, ZHANG Tao1, 2, CAI Jingbo1, 2, TANG Ming1, 2, LUO Kui1, 2, HU Lihua1, 2, *   

  1. 1. Zhejiang Mariculture Research Institute, Wenzhou 325005, China;
    2. Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-Resource, Wenzhou 325005, China
  • Received:2017-08-15 Online:2018-04-20 Published:2018-04-19

Abstract: In the present study, effects of culture density (16.08, 21.44, 26.80, 32.16, 37.52 kg·m-3), depth layer (0.50-1.25, 1.00-1.75, 1.50-2.25, 2.00-2.75 m) and size [initial individual weight (28.5±2.2), (35.4±1.7), (57.0±2.7) g] on specific growth rate (SGR) and coefficient of variation of individual weight (CV) of sea cucumber Apostichopus japonicas were explored. The experiment lasted for 180 d. It was shown that culture density had significant (P<0.05) influence on SRG and CV of sea cucumber. With the increase of culture density, SGR decreased yet CV increased significantly (P<0.05). In this study, culture layer had no significant influence on sea cucumber SRG and CV. However, culture size significantly (P<0.05) influenced SRG and CV of sea cucumber. With the increased culture size, SGR increased yet CV decreased significantly (P<0.05). It was suggested that culture density of sea cucumber should not exceed 26.80 kg·m-3, and the optimum culture layer and initial individual weight were 1.50~2.25 m and 33.3~62.5 g, respectively.

Key words: sea cucumbers, crane cage breeding, density, depth, size

CLC Number: