Dietary vitamin B6 requirement of grass shrimp, Penaeus monodon

A feeding trial was conducted to determine the adequate level of dietary vitamin B6 (pyridoxine, PN) for juvenile grass shrimp, Penaeus monodon. Purified basal diets were formulated using vitamin-free casein as the protein source. Graded levels (0, 10, 30, 60, 100, 150, 200 and 600 mg PN/kg diet) of PN were added to the basal diet which upon analyzed contained 0.37, 7.02, 22.43, 50.41, 81.79, 115.23, 153.48 and 550.03 mg/kg diet, respectively....