The effect of shrimp-head extract on growth and immune factors of Litopenaeus vannamei
PAN Jian-xiong1, LIN Xiao-tao1, CHENG Wei-xuan1, ZHANG Chao-hua2, HONG Peng-zhi2, LIN Ji-hui3
1. Institute of Hydrobiology, Jinan University, Guangzhou 510632; 2. Fisheries College, Zhanjiang Ocean University, Zhanjiang 524025; 3. School of Food Science and Technology, Zhanjiang Ocean University, Zhanjiang 524025, China
In order to investigate the effect of shrimp-head extract on growth and immune factors of Litopenaeus vannamei,Six added levels of the shrimp-head extract(0,1.0%,1.5%,2.0%,2.5%,3.0%) in the raw diets were fed to the shrimps(initial weight 6.35±0.38 g) for 49 days.The growth performances had no significant differences at all added levels.Compared with the control group,ACP activity in serum of the shrimps increased significantly at 1.5%,2.0%,2.5%and 3.0% added levels;AKP activity in serum of the shrimps increased significantly at 2.0%,2.5%and 3.0% added levels;PO activity in serum of the shrimps increased significantly at all added levels.The results indicated that the shrimp-head extract could strengthen the immunological competence of L.vannamei in suitable supplementation and had potential possibility to be an effective feed additive.
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PAN Jian-xiong1, LIN Xiao-tao1, CHENG Wei-xuan1, ZHANG Chao-hua2, HONG Peng-zhi2, LIN Ji-hui3. The effect of shrimp-head extract on growth and immune factors of Litopenaeus vannamei. , 2005, 24(4): 322-325.
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