Effects of probiotic bacterium on the growth performance and immunity of Litopenaeus vannamei in greenhouse
ZHANG Chongying;LIU Wei;SONG Jinqiu;Chongqing Three Gorges Polytechnic College;Chongqing Yunyang County Gaoyang Town Agricultural Technology Service Center;XiangXi Vocational And Technical College For Nation;
The experiment was conducted to investigate the effects of Lactobacillus acidophilus and Bacillus subtilis on the growth performance and immunity of Litopenaeus vannamei. A total of 280 thousand shrimps were fed four diets containing graded levels of Lactobacillus acidophilus and Bacillus subtilis(control group,test group A,test group B,test group C),respectively. Results showed that with the bait of probiotic bacterium concentration increased,feed conversion ratio of the test groups was significantly reduced,while the survival rate was significantly increased.The immune index showed similar change.AKP and ACP activity of test groups B,C were significantly higher than test group A and the control group(P 0.05),the POD activity of all test group were not significant difference(P 0.05),but were significantly higher than those in the control group(P 0.05).In conclusion,probiotic bacterium can improve the growth performance and the immune index of Litopenaeus vannamei in greenhouse effectively.
【CateGory Index】： S968.22