Role of Zingiber officinale and autochthonous probiotic Bacillus coagulans in feeds of Catla catla (Hamilton, 1822) for growth promotion, immunostimulation, histoprotection, and control of DNA damage

Experiment was conducted to assess the impact of ginger ( Zingiber officinale ) as a dietary supplement with probiotic bacterium Bacillus coagulans on growth performance, hematological parameters, and non-specific immune parameters in Catla catla . An attempt was also made to investigate their effects on histology and extent of DNA damage against pathogenic bacterium Aeromonas hydrophila in C. catla . Ten dietary treatments were designed in triplicate in which five groups of fingerlings fed on diets containing different incorporation level of dried ginger at 0 g kg −1 (C1; basal diet 1 with duckweed as major protein source), 1 g kg −1 (G1), 5 g kg −1 (G2), 10 g kg −1 (G3), and 15 g kg −1 (G4) and other five groups of fingerlings fed on diets (G5–G9) containing different incorporation level of dried ginger at 0, 1, 5, 10, and 15 g kg −1 along with probiotic bacterium B. coagulans @ 3000 CFU ml −1 for 90 days. Results clearly revealed significantly ( P