Application of Bacillus Coagulans as Paraprobiotic Against Acute Hepatopancreatic Necrosis Disease in Shrimp

P Snega Priya; V Pavithra; S Vaishnavi; Bader O Almutairi; Selvaraj Arokiyaraj; M Dhanaraj; S Seetharaman; Jesu Arockiaraj

doi:10.1007/s12602-024-10230-6

Application of Bacillus Coagulans as Paraprobiotic Against Acute Hepatopancreatic Necrosis Disease in Shrimp

Probiotics Antimicrob Proteins. 2024 Feb 8. doi: 10.1007/s12602-024-10230-6. Online ahead of print.

Authors

P Snega Priya¹, V Pavithra¹, S Vaishnavi¹, Bader O Almutairi², Selvaraj Arokiyaraj³, M Dhanaraj⁴, S Seetharaman⁴, Jesu Arockiaraj⁵

Affiliations

¹ Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulatur, Chengalpattu District, Tamil Nadu, 603203, India.
² Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
³ Department of Food Science & Biotechnology, Sejong University, Seoul, 05006, Korea.
⁴ Foundation for Aquaculture Innovations and Technology Transfer (FAITT), Kumaran Kudil, Thoraipakkam, Chennai, Tamil Nadu, 600097, India.
⁵ Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulatur, Chengalpattu District, Tamil Nadu, 603203, India. jesuaroa@srmist.edu.in.

PMID: 38329695
DOI: 10.1007/s12602-024-10230-6

Abstract

Paraprobiotics, known as non-viable or ghost probiotics, have attracted attention for their benefits over live microbial cells. This study was designed to investigate the paraprobiotic effects of heat-killed Bacillus coagulans on the white leg shrimp Litopenaeus vannamei. The paraprobiotic formulation was prepared in three different concentrations including B. coagulans 1 (10⁷ cells g^-1 diet), B. coagulans 2 (10⁸ cells g^-1 diet), and B. coagulans 3 (10⁹ cells g^-1 diet) through heat inactivation method. Preliminary toxicity assessments revealed that post-larvae shrimps (mean weight ± SE: 0.025 ± 0.007 g) treated with B. coagulans 1, 2 and 3 paraprobiotic formulations exhibited no mortality, confirming the non-toxic nature of the formulated diet. In a 90-day feeding trial involving juvenile shrimps (mean weight ± SE: 0.64 ± 0.05 g), growth parameters and feed conversion ratios improved in all experimental groups. Subsequently, these shrimps were challenged with Vibrio parahaemolyticus, revealing that paraprobiotic-fed shrimps exhibited significant survival rate improvements. Oxidative stress-related enzyme activities, such as superoxide dismutase and catalase, increased in paraprobiotic-fed shrimps post-Vibrio challenge, while the challenged control group showed decreased activity (p < 0.001). Nitric oxide levels are also increased in paraprobiotic-treated shrimp, with B. coagulans 3 showing a significant rise in nitric oxide activity (p < 0.001). This study further demonstrated the positive impact of paraprobiotic treatment on digestive enzymes, immune-related parameters (e.g., total hemocyte count, prophenoloxidase, and respiratory burst activity), and overall disease resistance. These findings suggest that B. coagulans paraprobiotics have the potential to enhance antioxidant, antibacterial, and immune-related responses in L. vannamei, making them a valuable addition to shrimp aquaculture.

Keywords: Acute hepatopancreatic necrosis disease; Bacillus coagulans; Paraprobiotics; Shrimp; Vibrio parahaemolyticus.

Abstract

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