Effects of fish protein hydrolysate on growth performance and humoral immune response in large yellow croaker (Pseudosciaena crocea R.)

被引:129
作者
Tang, Hong-gang [1 ,2 ]
Wu, Tian-xing [1 ,2 ]
Zhao, Zhan-yu [1 ]
Pan, Xiao-dong [1 ]
机构
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
[2] Zhejiang Univ, Ningbo Inst Technol, Key Lab Mol Design & Nutr Engn, Ningbo 315100, Zhejiang, Peoples R China
关键词
fish protein hydrolysate (FPH); growth performance; humoral immune response; large yellow croaker;
D O I
10.1631/jzus.B0820088
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
We investigated the effects of fish protein hydrolysate (FPH) on growth performance and humoral immune response of the large yellow croaker (Pseudosciaena crocea R.). One thousand and two hundred large yellow croakers [initial average weight: (162.75 +/- 23.85) g] were divided into four groups and reared in floating sea cages (3 mx3 mx3 m). The animals were fed with 4 diets: basal diet only (control) or diets supplemented with 5%, 10% and 15% (w/w) FPH. The results show that dietary FPH levels significantly influenced the growth and immunity of the large yellow croaker. Compared with the control group, total weight gain (TWG) in all treatment groups, relative weight gain (RWG) and specific growth rate (SGR) in fish fed with diets supplemented with 10% and 15% FPH were significantly increased (P < 0.05). Similar results were observed in immune parameters [lysozyme activity, serum complements, immunoglobulin M (IgM)]. Lysozyme activity, complement C4 and IgM were also significantly increased (P < 0.05) in fish fed with diets supplemented with 10% and 15% FPH, while complement C3 level was significantly increased (P < 0.05) in all treatment groups. In general, with the supplementation of FPH, particularly at dose of 10%, the growth performance and immunity of the large yellow croaker can be improved effectively.
引用
收藏
页码:684 / 690
页数:7
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