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<p>The aim of the present study was to know the dietary doses of <i>Lactobacillus plantarum</i> FLB1 affected <i>Cirrhinus mrigala</i> immune system and diseases resistance to <i>Aeromonas veronii</i> infection. Fish were fed graded probiotic diets @ basal diet only (D<sub>0</sub>), Basal diet + 10<sup>6</sup> colony-forming units (CFU)/g (D<sub>1</sub>), Basal diet + 10<sup>7</sup>&#xa0;CFU/g (D<sub>2</sub>), Basal diet + 10<sup>8</sup>&#xa0;CFU/g (D<sub>3</sub>), and Basal diet + 10<sup>9</sup>&#xa0;CFU/g (D<sub>4</sub>). All of the water quality parameters were within acceptable limits. A variety of immune parameters were evaluated 120&#xa0;days following feeding. Fish were exposed to <i>A. veronii</i> 120&#xa0;days after feeding. Significant increases were observed in blood Hb, TEC, TLC, PCV/Ht, MCV, MCH, and MCHC (<i>P</i> &lt; 0.05). Significant (<i>P</i> &lt; 0.05) enhancements were noted for albumin, globulin, and total serum protein. Blood glucose, total cholesterol, TG, and HDL, on the other hand, were all significantly (<i>P</i> &lt; 0.05) lower. All probiotic-fed groups showed improvements in non-specific immunological markers, serum lysozyme and respiratory burst activity. Fish fed probiotics showed a considerable increase in the number of lactic acid bacteria in their gastrointestinal tracts, further supporting the viability and survival of <i>Lactobacillus plantarum</i> in fish guts. While all of the treatments in the challenge research against <i>A. veronii</i> showed improved biochemical parameters and increased relative percent survival, treatment D<sub>4</sub> had the greatest value, indicating the highest level of protection against the fish pathogen. Thus, for better <i>C. mrigala</i> immunity and disease resistance, probiotic strain <i>L. plantarum</i> FLB1 can be supplemented @ 10<sup>9</sup>&#xa0;CFU/g feed.</p>

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Dietary Supplementation of Probiotic Lactobacillus plantarum FLB1 Enhanced Immune Response and Disease Resistance of Tropical Freshwater Fish, Cirrhinus mrigala

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Thakur Satyam Singh,
  • Abhed Pandey

摘要

The aim of the present study was to know the dietary doses of Lactobacillus plantarum FLB1 affected Cirrhinus mrigala immune system and diseases resistance to Aeromonas veronii infection. Fish were fed graded probiotic diets @ basal diet only (D0), Basal diet + 106 colony-forming units (CFU)/g (D1), Basal diet + 107 CFU/g (D2), Basal diet + 108 CFU/g (D3), and Basal diet + 109 CFU/g (D4). All of the water quality parameters were within acceptable limits. A variety of immune parameters were evaluated 120 days following feeding. Fish were exposed to A. veronii 120 days after feeding. Significant increases were observed in blood Hb, TEC, TLC, PCV/Ht, MCV, MCH, and MCHC (P < 0.05). Significant (P < 0.05) enhancements were noted for albumin, globulin, and total serum protein. Blood glucose, total cholesterol, TG, and HDL, on the other hand, were all significantly (P < 0.05) lower. All probiotic-fed groups showed improvements in non-specific immunological markers, serum lysozyme and respiratory burst activity. Fish fed probiotics showed a considerable increase in the number of lactic acid bacteria in their gastrointestinal tracts, further supporting the viability and survival of Lactobacillus plantarum in fish guts. While all of the treatments in the challenge research against A. veronii showed improved biochemical parameters and increased relative percent survival, treatment D4 had the greatest value, indicating the highest level of protection against the fish pathogen. Thus, for better C. mrigala immunity and disease resistance, probiotic strain L. plantarum FLB1 can be supplemented @ 109 CFU/g feed.