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| Effects of Rhodotorula benthica in Diet with Brown Fish Meal on Growth Performance of Turbot Scophthalmus maximus |
| ZHANG Rui-ling,NIU Si-jia,ZHANG Hong-juan,YANG Zhen-cai |
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Abstract This experiment was conducted to investigate the effects of replacement of white fish meal by brown fish meal and two different gradients of marine yeast Rhodotorula benthica on growth performance , body composition and body indication of turbot Scophthalmus maximus .Four isonitrogenous and isoener-getic diets were formulated and contained 58% white fish meal as a control diet (W) .The diet contained 58% brown fish meal named B .The experimental diets ( B+1 ,B+2 ) were respectively supplemented with 1 g/kg ,and 2 g/kg the yeast on the basis of brown fish meal .Four hundred and eighty turbot with body weight (213 .48 ± 0 .23) g was randomly divided into 4 groups with 3 replicates per group ,and 40 fish per replicate for six weeks .The results showed that compared with B ,addition of 1 g/kg the yeast in the basis of brown fish meal significantly improved the the feeding rate ,relative weight gain ,the specific grow th rate and protein efficiency rate of turbot (P<0 .05) ,a similar level as W and a higher level than in B+2 group (P>0 .05) .There were no significant difference in body composition and body indication of turbot (P>0 .05) .In conclusion ,addition of 1 g/kg into brown fish meal can significantly improved feed-ing rate ,protein efficiency rate and growth performance of turbot ,a similar growth level as white fish meal .
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Received: 25 October 2014
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