细鳞鱼在人工流水养殖下的生长特性

Growth Characters of Lenok Brachymystax lenok Cultured in a Flowing Water Pond

利用2．8～16．8℃泉水，进行细鳞鱼工厂化流水养殖，12、24、30月龄的体重分别可以达到60．53±27．60g、323．37±74．61g和735．83±164．80g。要达到500g上市规格，需要24～28个月。1龄鱼生长比较缓慢，2、3龄生长速度较快。体重变异系数变化较大，在20～55％之间。

Juvenile lenok Brachymystax lenok were reared in ponds with running water at 2.8-16.8℃.,and had mean body weight of 60.53±27.60g in 12 months, 323.37±74.61g in 24 months, and 735.83±164.80 g in 30 months. The lenok will have marketable body weigh of over 500 g in 24-28 months. The lenok showed better growth in 2-3 years old than in 1 year old. The coefficient varia- tion in body weight wase changed from 20% to 55%.