Effects of Dietary Lactobacillus plantarum on Growth Performance, Digestive Enzymes and Gut Morphology of Litopenaeus vannamei

文献类型： 外文期刊

第一作者： Zheng, Xiaoting

作者： Zheng, Xiaoting;Duan, Yafei;Dong, Hongbiao;Zhang, Jiasong;Zheng, Xiaoting

作者机构：

关键词： Lactobacillus plantarum; Litopenaeus vannamei; Growth performance; Digestive enzymes; Gut morphology

期刊名称：PROBIOTICS AND ANTIMICROBIAL PROTEINS （ 影响因子：4.609； 五年影响因子：4.585 ）

ISSN： 1867-1306

年卷期： 2018 年 10 卷 3 期

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收录情况： SCI

摘要： A 15-day feeding trial was conducted to investigate the effect of dietary Lactobacillus plantarum on growth performance, digestive enzyme activities and gut morphology of juvenile Pacific white shrimp, Litopenaeus vannamei (initial body weight = 7.96 +/- 0.59 g). Four microbound diets were formulated to contain fermentation supernatant (FS), live bacteria (LB), dead bacteria (DB), and cell-free extract (CE) of L. plantarum. Results indicated that final weight was significantly higher in FS, DB, and CE group in comparison to the control group (P < 0.05). The maximum weight gain rate (WGR) and specific growth rate (SGR) of the CE diet group were significantly higher than that of other groups (P < 0.05). The FCR of CE diet group was lower than that of the control, LB, DB, and FS diets groups (P < 0.05). The highest digestive enzyme activities (amylase, lipase, and pepsin activity) in the hepatopancreas and gut of shrimp were observed in the CE diet group. Histological study revealed that dietary CE diet could significantly increase the enterocytes height of shrimp. The administration of cell-free extract of L. plantarum could effectively improve the growth performance of L. vannamei via the improvement of digestive enzyme activities and the enterocytes height of shrimp. The results of this study will be essential to promote application of probiotics in shrimp aquaculture.

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