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| Fat Minnow Phoxinus lagowskii Was Cultured in a Pond |
| JIN Guang-hai,YANG Pei-min,LUO Xiao-nian,LIU Yi-xin,LI Jun |
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Abstract A fat minnow Phoxinus lagowskii culture trail was carried out in a 0 .53 hm2 pond in a fish farm in Tieling City ,Liaoning province ,in 2013 .Fat minnow juveniles with initial body weight of 11 .2 g was reared at a rate of 143 thousands individuals per hm2 ,aerating by a power of a 3 .0 kW aerator and by feed‐ing formulated feed for common carp (Cyprinus carpio) and polycultured with silver carp Hypophthal‐michthys molitrix with initial body weight of 100 g at a rate of 943 individuals per hm2 and bighead carp A ristichthys nobilis with initial body weight of 150 g at a rate of 1415 individuals per hm2 for 161 d .Total yield was harvested ,including 3350 kg of fat minnow with body weight of 46 .4 g ,a survival rate of 95% , and food conversion ratio of 2 .1 ,490 kg of silver carp with body weight of 980 g and 1050 kg of bighead carp with body weight of 1400 g .The appropriate equation was expressed for body weight (m) as m=-0 .0012t2 + 0 .4286 t+10 .574(r2 = 0 .6684) and for total length (L) as L = 0 .0006 t2 - 0 .0169 t +11 .343(r2 = 0 .6623) . The relationship between total length and body weight was described as m=0 .0033 L3 .4673 (r2 =0 .9117 ) .
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Received: 25 December 2014
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