Effects of dietary Bacillus subtilis DSM 32315 supplementation on the growth, immunity and intestinal morphology, microbiota and inflammatory response of juvenile largemouth bass Micropterus salmoides

2021 ◽  
Author(s):  
Rui‐Yu Du ◽  
Hai‐Qi Zhang ◽  
Jun‐Xing Chen ◽  
Jian Zhu ◽  
Ju‐Yun He ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Inflammatory Response ◽  
Largemouth Bass ◽  
Micropterus Salmoides ◽  
Intestinal Morphology

scholarly journals Effects of Virgin Microplastics on Growth, Intestinal Morphology and Microbiota on Largemouth Bass (Micropterus salmoides)

2021 ◽  
Vol 11 (24) ◽  
pp. 11921
Author(s):  
Chaonan Zhang ◽  
Qiujie Wang ◽  
Shaodan Wang ◽  
Zhengkun Pan ◽  
Di Sun ◽  
...  
Keyword(s):  
Largemouth Bass ◽  
Pathogenic Bacteria ◽  
Micropterus Salmoides ◽  
Exposure Period ◽  
Intestinal Morphology ◽  
Aquatic Environments ◽  
Potential Threat ◽  
Commercial Fish ◽  
Fish Gut ◽  
The Impact

Microplastics (MPs), classified as plastic debris less than 5 mm in size, are widely found in various aquatic environments. However, there have been few studies regarding their potential threat under aquaculture conditions. The aim of this study was to investigate the general health, intestinal morphology and microbiota of virgin polypropylene MPs (3–4 mm) on largemouth bass (Micropterus salmoides) over a 28-d exposure period. Four groups were divided according to whether the MPs were added in water or in food. The results disproved the hypothesis that MPs expose may adversely affect the growth of fish. Largemouth bass expelled MPs with minimal harm to the organism. MPs exposure had no significant effect on the community composition or diversity of intestinal microbial, although it could partly influence intestinal morphology, and the recombination process of the intestinal microbial community. Fish may be more sensitive to answer MPs exposure in water than in feed. Proteobacteria could potentially be pathogenic bacteria phylum in fish gut when affected by MPs. This research represents an innovative attempt to investigate the impact of virgin MPs on largemouth bass using a manipulative feeding experiment. The results could provide new insight on commercial fish health when challenged with MPs pollution.

Pathogeny of disease characterized by swollen liver and spleen in largemouth bass (Micropterus salmoides)

2013 ◽  
Vol 18 (3) ◽  
pp. 654-659 ◽  
Author(s):  
Dongmei MA ◽  
Guocheng DEND ◽  
Junjie BAI ◽  
Shengjie LI ◽  
Xiaoyan JIANG ◽  
...  
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides

scholarly journals Effects of Bacillus subtilis on growth performance, serum parameters, digestive enzyme, intestinal morphology, and colonic microbiota in piglets

AMB Express ◽  
2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Bo Deng ◽  
Jie Wu ◽  
Xiaohui Li ◽  
Cheng Zhang ◽  
Xiaoming Men ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Growth Performance ◽  
Digestive Enzyme ◽  
Basal Diet ◽  
Intestinal Morphology ◽  
Control Group ◽  
Promising Alternative ◽  
Serum Parameters ◽  
Colonic Microbiota ◽  
Diet Supplementation

AbstractThe present study was conducted to investigate effects of Bacillus subtilis on growth performance, serum parameters, digestive enzymes, intestinal morphology, and colonic microbiota in piglets. A total of 72 piglets were weighed and randomly allotted into three treatments (four replication pens per treatment with six piglets/pen) for a 28-day experiment. The dietary treatments were as follows: basal diet (control group, CTR), basal diet supplementation with antibiotic (antibiotic group, ABT), and basal diet supplementation with 0.1% Bacillus subtilis (probiotic group, PBT). The average daily gain of body weight increased in both the ABT and PBT groups, and dietary antibiotics decreased the feed:gain ratio (F:G), as compared to the CTR group (P < 0.05). Both ABT and PBT piglets had increased serum triglycerides and lipase, amylase, maltase activities and villus height:crypt depth ratio (V/C) in ileum (P < 0.05). The PBT group also showed an increase in serum glucose and villus height in the ileum (P < 0.05). Dietary antibiotics increased Lactobacillus johnsonii, as compared to the CTR group, but decreased bacterial diversity and increased Escherichia coli, as compared to the PBT group (P < 0.05). Piglets dietary with B. subtilis modulated the microbiota by increasing the abundance of Firmicutes (L. johnsonii, L. reuteri) and decreasing the abundance of E. coli, as compared to the control group (P < 0.05). These results indicate that dietary of B. subtilis improves growth performance and intestinal health and can be a promising alternative to antibiotics in piglets diet.

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