The relationship between hematological parameters A, RBCs (106mm-3) optimum at 2.45; B, WBCs (103mm-3) optimum at 2.00; C, PLT optimum at 2.59; D, Hb (g/100ml) optimum at 1.88; E, PCV (%) optimum at 1.44 and F, MCV (pg) 2.36 of C. catla fed SFM based diets.