古恒光1 ，周银环2
（1湛江特呈岛深水网箱养殖基地，湛江 524066；2 广东海洋大学，湛江 524025）

摘要：为了研究深水网箱养殖卵形鲳鲹适宜的放养密度，在一组4个深水网箱中分别按照40，50，60，80尾/m3的密度，放养规格12~14 g/尾的卵形鲳鲹苗种进行为期100~122 d的养殖试验。结果发现，40~50尾/m3放养密度的各项生长指标优于60~80尾/m3，40~50尾/m3的日均增重、饲料系数、成活率和利润分别为4.32~4.23 g/d、1.75~1.80、91.7%~90.3%、43.0~44.6元/m3，60~80尾/m3分别为3.83~3.12 g/d、1.92~2.10、89.6%~86.4%、23.4~－17.4元/m3。过高的放养密度不利于卵形鲳鲹生长，并且增大了饲料系数，增加了养殖成本。在深水网箱中放养规格为12~14 g/尾的卵形鲳鲹，养殖密度以40~50尾/m3为宜。

关键词：卵形鲳鲹；深水网箱；放养密度；

Stocking density experiment of Trachinotus ovatus in off-shore cage
GU Heng-guang1, ZHOU Yin-huan2
( 1 Zhanjiang Techengdao Base of Off-shore Cage Aquaculture, Zhanjiang 524066,China;
2 Guangdong Ocean University, Zhanjiang 524025, China )

Abstract: In order to find favourable stocking densty of Trachinotus ovatus in off-shore cage, weight 12~14 g/ind. Trachinotus ovatus were cultured in four off-shore cages, the stocking densty was 40 fishs/m3, 50 fishs/m3, 60 fishs/m3 and 80 fishs/m3, respectively. The 100~122 d experiment showed: The growth parameters of Trachinotus ovatus for 40~50 fishs/m3 were better than 60~80 fishs/m3. The daily average weight gain, feed conversion ratio, survival rate and profit was 4.32~4.23 g/d, 1.75~1.80, 91.7%~90.3%, 43.0~44.6 yuan RMB/m3 with 40~50 ind./m3 and 3.83~3.12 g/d, 1.92~2.10, 89.6%~86.4%, 23.4~17.4 yuan RMB/m3 with 60~80 fishs/m3, respectively. The results showed that with increasing rearing density, feed conversion ratio and cost of Trachinotus ovatus culture were increased, while the daily average weight gain and profit were decreased. Weight 12~14 g/fish Trachinotus ovatus were cultured in off-shore cage, the favourable stocking densty was 40~50 fishs/m3.

Key words: Trachinotus ovatus; off-shore cage; stocking densty

作者简介：古恒光（1973—），男，硕士，从事水产养殖方面的研究工作。E-mail: hengguanggu@163.com
 

(来源：《渔业现代化》2009.36(4)：33-36)