Feed Science and Technology

Effects of Fresh Frozen Trash Fish and Commercial Feeds on Growth, Lipid Metabolism and Antioxidant Function of Turbot (Scophthalmus maximus L.)

  • NIU Huaxin ,
  • LEI Jilin ,
  • CHANG Jie ,
  • JIA Yudong ,
  • GAO Chunren
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  • 1. Key Laboratory for Sustainable Development of Marine Fisheries, Minister of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;
    2. School of Animal Science and Technology, Inner Mongolia University for the Nationalities, Tongliao 028000, China

Received date: 2013-05-17

  Online published: 2013-10-27

Abstract

This experiment was conducted to study the effects of fresh frozen trash fish (TF) and commercial feeds on growth, lipid metabolism and antioxidant function of turbot (Scophthalmus maximus L.). A total of 450 turbot with an initial average body weight of (111.4±5.6) g were randomly divided into 3 groups (3 replicates per group and 50 fish per replicate), which were fed TF, low-fat commercial feed (LCF) and high-fat commercial feed (HCF), respectively. After 110 d feeding, the results showed that TF significantly improved the final average body weight, weight growth rate, specific growth rate and feed conversion rate of turbot, but the protein efficiency rate of TF group was significantly lower than that of LCF and HCF groups (P>0.05). The hepato-somatic index, viscero-somatic index and condition factor of LCF group were significantly lower than those of TF and HCF groups (P<0.05). The contents of total cholesterol and triglycerides, and the activities of alanine aminotransferase and aspartate aminotransferase in serum of LCF group were lower than those of HCF (P<0.05) and TF groups (the contents of total cholesterol and triglycerides, and alanine aminotransferase activity, P>0.05; aspartate aminotransferase activity, P<0.05), but the high-density lipoprotein cholesterol content of LCF group was higher than that of HCF (P<0.05) and TF groups (P>0.05). The hepatopancreas lipoprotein lipase activity of TF and HCF groups was significantly higher than that of LCF group (P<0.05), but the malate dehydrogenase activity of TF and HCF grups was significantly lower than that of LCF group (P<0.05); the carnitine palmitoyl transferase-Ⅱ and fatty acid synthesis activities in hepatopancreas of LCF group were significantly higher than those of HCF group (P<0.05), but the difference between TF group and LCF group, and between TF group and HCF group was not significant (P>0.05); the total antioxidant capability, and the activities of superoxide dismutase and catalase in lipolytic enzyme of LCF group were significantly higher than those of TF and HCF groups (P<0.05), but the malondialdehyde content of LCF group was significantly lower than that of TF and HCF groups (P<0.05). In summary, feeding TF can improve the growth performance of turbot, but its feed efficiency is much lower than that of the commercial feeds. TF and HCF make the hepato-somatic index and viscero-somatic index increase, serum transaminase activity, blood lipid content and hepatopancreas lipolytic enzyme activity rise, hepatopancreas lipese activity fall, and the hepatopancreas anti-oxidant ability decrease. Therefore, it is recommended that reference for TF quality nutritional properties, the nutritional formulation of turbot, especially lipid supplemental level, need to optimize and adjust, which improve the quality of turbot commercial feed and effectively protect healthy farming practices of turbot.

Cite this article

NIU Huaxin , LEI Jilin , CHANG Jie , JIA Yudong , GAO Chunren . Effects of Fresh Frozen Trash Fish and Commercial Feeds on Growth, Lipid Metabolism and Antioxidant Function of Turbot (Scophthalmus maximus L.)[J]. Chinese Journal of Animal Nutrition, 2013 , 25(11) : 2696 -2704 . DOI: 10.3969/j.issn.1006-267x.2013.11.024

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