Effect of dietary supplementation of Bacillus subtilis on haematological and immunological parameters of Catla catla (Hamilton)

Effect of dietary supplementation of a Gram-positive, aerobic, probiotic bacterium Bacillus subtilis on the immunohaematological indices during pre- and post-challenge in Indian major carp, catla (Catla catla), was studied. The B. subtilis was administered orally at four different doses 1.0 × 106 (T1), 1.0 × 107 (T2), 1.0 × 108 (T3), and 1.0 × 109 (T4) cfu g−1 feed to C. catla for 90 days. The positive control (Cp) and negative control (Cn) were...