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以添加不同量虾头提取物(0、1.0%、1.5%、2.0%、2.5%、3.0%)的饲料投喂初体质量为6.35±0.38 g的凡纳滨对虾49 d,研究其对对虾的生长及免疫因子的影响。各组凡纳滨对虾的生长及体成分组成没有显著差异。与对照组相比,1.5%~3.0%添加量组对虾血清中的ACP活力明显提高;2.0%~3.0%添加量组对虾血清中的AKP活力明显提高;各添加量组对虾血清中的PO活力都有明显提高。实验结果表明,添加适当剂量的虾头提取物可以增强凡纳滨对虾的免疫能力。
The shrimp of Litopenaeus vannamei (6.35 ± 0.38 g) were fed with feed containing different amount of shrimp head extract (0, 1.0%, 1.5%, 2.0%, 2.5%, 3.0% The impact of growth and immune factors. There was no significant difference in the growth and body composition of Litopenaeus vannamei from each group. Compared with the control group, the ACP activity of shrimp serum of 1.5% -3.0% addition group was significantly increased; the AKP activity of shrimp serum of 2.0% ~ 3.0% addition group was significantly increased; the PO activity Have significantly improved. The experimental results show that the addition of the appropriate dose of shrimp head extract can enhance the immunity of Litopenaeus vannamei.