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Effect of combined fish meal : soybean meal ratio, vitamin C and fish oil supplementations in diet on the growth and reproduction of red swamp crayfish, Procambarus clarkii (Crustacea: Decapoda)
Author(s) -
Xu JiaYuan,
Wang TingTing,
Wang YuFeng,
Peng Yu
Publication year - 2010
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2010.02517.x
Subject(s) - procambarus clarkii , biology , crayfish , zoology , fish meal , gonadosomatic index , reproduction , meal , decapoda , crustacean , feed conversion ratio , soybean meal , fishery , food science , fecundity , ecology , fish <actinopterygii> , endocrinology , population , body weight , raw material , demography , sociology
Fish meal (FM), vitamin C (VC) and fish oil (FO) play important roles in the growth and reproduction in aquatic animals. To determine the optimum dietary combinations of FM:SM (soybean meal) ratio, VC and FO supplementations for the growth and reproduction of female crayfish Procambarus clarkii , we used the L9 (3 3 ) orthogonal array, which arranged three factors varied at three levels (FM:SM at 1:3, 1:2 and 1:1.5; VC supplementation at 0.02%, 0.04% and 0.06%; FO inclusion at 1.90%, 2.85% and 3.80%). Range analysis showed that the highest weight gain (WG) of the crayfish occurred at FM:SM of 1:1.5, VC supplementation of 0.04% and FO inclusion of 1.90%, and the maximum gonadosomatic index (GSI), egg laying amount (ELA) and spawning rate (SR) were obtained at FM:SM 1:1.5, VC supplementation 0.06% and FO inclusion 3.80%. Analysis of variance indicated that all the three factors had no significant effects on WG. Fish oil supplementation significantly affected GSI, ELA and SR ( P <0.05), while FM:SM did not significantly influence any of these indicators. Taking the cost into consideration, we suggest that a dietary FM:SM of 1:3, VC supplementation 0.06% and FO inclusion 3.80% might be the optimal combinations for the reproduction of P. clarkii .