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| Fry and Juvenile Rearing of Fat Minnow Phoxinus lagowskii Dybowski in an Earthen Pond |
| LUO Xiao-nian,LI Jun,YANG Pei-min,JIN Guang-hai,LIU Yi-xin,LI Jing-wei,JIANG Xiang-hui |
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Abstract Experiments on fry and juvenile rearing were conducted in Fengcheng city and Panjin city in Liaoning Province to optimize the fish breeding technology for fat minnow Phoxinus lagowskii Dybowski summerlings ,and yearlings .A total of 121 thousand fry were cultured in a 0 .27 hm2 pond with high rotifer density for 30 days ,and 79 thousand summerlings with average total body length of 37 .90 mm and body weight of 0 .51 g were obtained ,with body length increment of 5 .6 times ,body weight gain of 510 times ,and survival rate of 65% .A total of 80 thousand summerlings with total body length of 4 .5 cm were cultured in a 0 .19 hm2 pond for 110 days ,and 76 .8 thousand yearlings with average total body length of 10 .46 cm and body weight of 17 .76 g (the maximum body weight 20 g) were harvested at a rate of 7306 .5 kg per hm2 pond ,with body length increment of 2 .3 times ,body weight gain of 22 .2 times ,and survival rate of 96% ,and feed conversion ratio of 1 .6 .The findings suggest that the fry and juveniles of fat minnow can be cultured in an earthen pond .
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Received: 25 March 2014
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