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Antibacterial Activities of Bacillus amyloliquefaciens DQB-1 Isolated From the Cecum of Dezhou Donkeys

文献类型： 外文期刊

作者： Chen, Nannan 1 ; Liu, Yu 1 ; Qin, Pingwei 2 ; Li, Yang 3 ; Ma, Diyang 4 ; Li, Juan 5 ; Shi, Tongrui 2 ; Zhu, Zhanbo 1 ;

作者机构： 1.HeiLongJiang BaYi Agr Univ, Coll Anim Sci & Vet Med, Daqing 163319, Peoples R China

2.Heilongjiang Acad Agr Sci, Branch Anim Husb & Vet, Qiqihar, Peoples R China

3.Heilongjiang Bayi Agr Univ, Coll Engineer, Daqing, Peoples R China

4.Chinese Acad Agr Sci, Harbin Vet Res Inst, Harbin, Peoples R China

5.Agr Int Cooperat & Exchange Stn Shanxi Prov, Taiyuan, Peoples R China

关键词： Donkey; Microecological agents; Biological Control; B; amyloliquefaciens; Antibacterial activity

期刊名称：JOURNAL OF EQUINE VETERINARY SCIENCE （ 影响因子：1.583； 五年影响因子：1.579 ）

ISSN： 0737-0806

年卷期： 2021 年 102 卷

页码：

收录情况： SCI

摘要： The microorganisms in the cecum of donkeys share similar functions as those in the rumen of cattle. Transformation of the cecal microenvironment by probiotics plays an important role in the health and growth of donkeys. In order to screen out excellent donkey probiotic preparations, in this study, we isolated an antibacterial strain of Bacillus amyloliquefaciens (designated as DQB-1) from the cecum of Dezhou donkey. The strain was assessed in terms of antibacterial activity, antibacterial substance analysis, and stability. The results show that, the Bacillus amyloliquefaciens DQB-1 exhibited protease production activity and can significantly inhibit the growth of bacterial and fungal pathogens. The strongest antibacterial substance would be obtained after 24 hours of growth. The most suitable storage temperature for antibacterial extracts is-20 degrees C. The antibacterial substance produced by Bacillus amyloliquefaciens DQB-1 isolated from donkeys has strong antibacterial activity, protease-producing activity and good stability. Therefore, it can be developed as a probiotic preparation for preventing infectious diseases in donkey farms. (c) 2021 Elsevier Inc. All rights reserved.

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