To investigate the responses of growth,immunity and serum biochemical parameters of Nibea albiflora to different cultivation modes,a 300-day cultivation test of both recirculating aquaculture and offshore cage culture system was set up.By measuring the specific growth rate,levels of lysozyme,total antioxidants capacities of liver,differences on growth,immunity and serum physiology of Nibea albiflora were studied.The results show that in both cultivation modes,the specific growth rates are 0.31％ and 0.33％,the survival rates are (64.85 ±4.72)％ and (77.50 ±5.32)％,and the feed coefficient are 1.21 and 1.07 respectively.The levels of lysozyme,glucose and cortisol increased significantly after cultivation in both modes and the amount of IgM increased and then decreased after cultivation in both modes.The antioxidant capacities of Nibea albiflora liver are significantly different in two cultivation modes (P ＜ 0.05).In circulating water system,the liver antioxidant capacities increased clearly in the early phase,from 7.683 ± 0.731 U mgprot on day 0 to 60.808 ± 12.937U · mgprot on day 100.Despite the liver antioxidant capacities decreased in the late phase,it still shows a significant difference compared to the begining.In net-cage system,the total liver antioxidant capacities keep relatively stable from beginning to the end (P ＞ 0.05).In summary,the circulating water system shows higher stress on Nibea albiflora than the net-cage system under the experimental conditions.%为探讨黄姑鱼(Nibea albiflora)生长、免疫、血清生化指标对不同养殖模式的响应,设置了循环水养殖和近海网箱养殖两种模式,进行300 d的养殖实验,通过检测特定生长率、血清溶菌酶以及肝脏总抗氧化能力等指标,比较黄姑鱼的生长、免疫及血清生化的差异.结果显示,在本实验的循环水和网箱两种养殖模式条件下,黄姑鱼的特定生长率分别为0.31％和0.33％,存活率分别为(64.85±4.72)％和(77.50±5.32)％,饵料系数分别为1.21和1.07;溶菌酶、血清葡萄糖、皮质醇指标在两种养殖模式中均有显著升高;IgM呈先上升后下降的变化趋势;循环水系统中黄姑鱼肝脏的抗氧化指标在0～50 d期间均有显著提高,并且都与网箱系统中的黄姑鱼肝脏的抗氧化指标有显著性差异(P＜0.05);循环水系统中黄姑鱼总抗氧化能力从实验开始时的(7.683±0.731)U·mgprot-1上升到100 d时的(60.808±12.937)U·mgprot-1,后期虽有所回落,但仍与0d时有显著性差异(P＜0.05);网箱系统中黄姑鱼抗氧化指标在整个实验期间变化比较平稳,无显著性差异(P＞0.05).结果表明,在本实验条件下循环水系统对黄姑鱼的胁迫大于网箱系统.
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