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replacement of dietary fish oil with Vegetable oils Improves the Growth and Flesh Quality of Large Yellow Croaker(Larmichthys crocea)

引用

Journal of Ocean University of China 2014年第3期13卷 445-452页

作者： DUAN Qingyuan MAI Kangsen SHENTU Jikang AI Qinghui ZHONG Huiying JIANG Yujian ZHANG Lu ZHANG Chunxiao GUO Sitong Key Laboratory of Aquaculture Nutrition and Feed of Ministry of Agriculture of China Ocean University of China Ningbo Academy of Ocean and fishery College of Food Science and Biotechnology Zhejiang Gongshang University

We investigated the effect of the replacement of dietary fish oil with vegetable oils on the growth and flesh quality of large yellow croaker(Larmichthys crocea). The basal diet(FO) was formulated to contain 66.5% fish meal and 6.4% menhaden fish oil; whereas the other 3 experimental diets were formulated by replacing the fish oil with 50% soybean oil(SO50), 100% soybean oil(SO100) and 100% palm oil(PO100), respectively. The 4 diets were randomly assigned to 4 floating sea cages(3.0 m × 3.0 m × 3.0 m), and each was stocked with 250 fish individuals with an initial average weight of 245.29 g ± 7.45 g. The fish were fed to apparent satiation twice a day at 5:00 and 17:00, respectively, for 12 weeks. Experimental analysis showed that the specific growth rate of fish fed SO50 or PO100 were significantly higher than that of fish fed FO or SO100(Pfish fed FO than in those fed the other 3 diets(Pfish among the dietary treatments were observed(P>0.05). Compared to FO diet, SO50, SO100 and PO100 diets led to substantial decreases in the liquid loss and water loss from fresh fillets(1 d, 4℃)(Preplacement of fish oil with vegetable oils. These findings indicated that the growth performance and selected flesh quality properties(liquid holding capacity and TBARS value) of large yellow croaker were substantially improved by replacing dietary fish oil with vegetable oils.

关键词： large yellow croaker Larmichthys crocea dietary fish oil replacement vegetable oil growth rate flesh quality

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