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Applied Microbiology
Volume 2
Issue 1
10.3390/applmicrobiol2010012
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Communication

Colonization of Lactobacillus rhamnosus GG in Cirrhinus molitorella (Mud Carp) Fingerling: Evidence for Improving Disease Resistance and Growth Performance

by
Yang-Mei Yu
,
Peggy Miu-Yee Poon
,
Aayushi Ashok Sharma
,
Sidney Man-Ngai Chan
,
Fred Wang-Fat Lee
,
Ian Wing-Yin Mo
and
Eric Tung-Po Sze
*
School of Science and Technology, Hong Kong Metropolitan University, Hong Kong SAR, China
*
Author to whom correspondence should be addressed.
Appl. Microbiol. 2022, 2(1), 175-184; https://doi.org/10.3390/applmicrobiol2010012
Submission received: 31 December 2021 / Revised: 14 February 2022 / Accepted: 15 February 2022 / Published: 17 February 2022
(This article belongs to the Special Issue Current Trends in Exploiting the Influence of Natural Substances, Compounds and Probiotics as Antimicrobial Agents for Food and Health Applications)
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Abstract

The use of probiotic bacteria can not only enhance the nutritional utilization of fish feeds to produce more biomass but can also provide a practically “safer” alternative to the fish farming industry to reduce the abuse of antibiotics and drugs. This study investigated the possibility of colonizing Lactobacillus rhamnosus strain GG (LGG) to the intestine of Cirrhinus molitorella (mud carp) fingerling. Colonization of LGG was observed in gut tissue after 14 days of administration with a diet supplemented with 1 × 108 CFU/mL LGG. Moreover, growth performance parameters of the LGG-supplemented diet group, including relative weight gain, feed conversion ratio and feed efficiency, were found about two-fold higher than the control group after 60 days. In addition, fish fed with an LGG-supplemented diet for 60 days showed substantial resistance against the infection of pathogenic bacterial Aeromonas hydrophila, with a relative survival rate of up to 57% compared to the control group. In summary, the results indicated that LGG as dietary supplement for mud carp fingerling can enhance nutrition utilization and better protect fish against the infection of Aeromonas hydrophila. The results provide an insight to the fish farming industry, encouraging a reduction in the use of antibiotics and drugs and the production of “safer” mud carp for the market at a manageable cost.
Keywords: Cirrhinus molitorella; Lactobacillus rhamnosus GG; colonization of probiotics; Aeromonas hydrophila; disease resistance Cirrhinus molitorella; Lactobacillus rhamnosus GG; colonization of probiotics; Aeromonas hydrophila; disease resistance

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MDPI and ACS Style

Yu, Y.-M.; Poon, P.M.-Y.; Sharma, A.A.; Chan, S.M.-N.; Lee, F.W.-F.; Mo, I.W.-Y.; Sze, E.T.-P. Colonization of Lactobacillus rhamnosus GG in Cirrhinus molitorella (Mud Carp) Fingerling: Evidence for Improving Disease Resistance and Growth Performance. Appl. Microbiol. 2022, 2, 175-184. https://doi.org/10.3390/applmicrobiol2010012

AMA Style

Yu Y-M, Poon PM-Y, Sharma AA, Chan SM-N, Lee FW-F, Mo IW-Y, Sze ET-P. Colonization of Lactobacillus rhamnosus GG in Cirrhinus molitorella (Mud Carp) Fingerling: Evidence for Improving Disease Resistance and Growth Performance. Applied Microbiology. 2022; 2(1):175-184. https://doi.org/10.3390/applmicrobiol2010012

Chicago/Turabian Style

Yu, Yang-Mei, Peggy Miu-Yee Poon, Aayushi Ashok Sharma, Sidney Man-Ngai Chan, Fred Wang-Fat Lee, Ian Wing-Yin Mo, and Eric Tung-Po Sze. 2022. "Colonization of Lactobacillus rhamnosus GG in Cirrhinus molitorella (Mud Carp) Fingerling: Evidence for Improving Disease Resistance and Growth Performance" Applied Microbiology 2, no. 1: 175-184. https://doi.org/10.3390/applmicrobiol2010012

APA Style

Yu, Y.-M., Poon, P. M.-Y., Sharma, A. A., Chan, S. M.-N., Lee, F. W.-F., Mo, I. W.-Y., & Sze, E. T.-P. (2022). Colonization of Lactobacillus rhamnosus GG in Cirrhinus molitorella (Mud Carp) Fingerling: Evidence for Improving Disease Resistance and Growth Performance. Applied Microbiology, 2(1), 175-184. https://doi.org/10.3390/applmicrobiol2010012

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