The diets were formulated following that of Santiago et al (1982). The ingredients were
ground and sieved at 400 μm prior to mixing; all dried ingredients were thoroughly
mixed and liquid ingredients and vitamin/ mineral premix added last. Gelatinized
cornstarch was added as a final step before pelletizing. The moistened mixture was
pelleted (2 mm) in a meat grinder and oven-dried (60 oC) long enough to reduce