Effect of a Bacillus Probiotic Compound on Penaeus vannamei Survival, Water Quality, and Microbial Communities
文献类型： 外文期刊
作者： Hu, Xiaojuan 1 ; Xu, Yu 1 ; Su, Haochang 1 ; Xu, Wujie 1 ; Wen, Guoliang 1 ; Xu, Chuangwen 1 ; Yang, Keng 1 ; Zhang, Song 1 ; Cao, Yucheng 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab South China Sea Fishery Resources Exploita, Guangzhou 510300, Peoples R China
3.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Peoples R China
4.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
关键词： commercial Bacillus probiotic; composition analysis; water quality factors; microbial community
期刊名称：FISHES （ 影响因子：2.3； 五年影响因子：2.4 ）
ISSN：
年卷期： 2023 年 8 卷 7 期
页码：
收录情况： SCI
摘要： Given the widespread use of commercial probiotics in aquaculture, it is important to evaluate the quality and environmental effects of these additives. Here, the effects of a Bacillus probiotic compound, BG4, on Penaeus vannamei survival rate, water quality factors, and microbial communities were assessed. An analysis of the BG4 powder confirmed the content of probiotic bacteria: 50.2% Bacillus licheniformis, 48.4% Bacillus subtilis, and 1.4% Bacillus amyloliquefaciens, consistent with the information on the product packaging. The effective bacterial quantity (1.1 x 10(9) CFU/g) was higher than that indicated on the product label (2 x 10(8) CFU/g). BG4 was added to a sterilized aquaculture water system, according to the indicated bacterial quantity; after 7 days, the maximum ammonia nitrogen, phosphate, and chemical oxygen demand degradation rates were 36.3%, 28.9%, and 15.2%, respectively. In the shrimp culture experiment, the survival rate of P. vannamei and water quality did not differ significantly between the BG4 and control groups. The bacterial quantity and high-throughput sequencing results indicated that Bacillus content in BG4 group decreased continuously from 3.5 x 10(4) CFU/mL to 6.9 x 10(2) CFU/mL. To ensure the desired effect of probiotics in commercial aquaculture applications, additional quality evaluations and scientific assessments are needed.
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