Dietary Threonine Requirement of Pekin Ducks from 15 to 35 Days of Age
Depending on the method used, the threonine requirement of young male ducks was estimated in this work at Purdue University to range from a low of 0.62 per cent to minimise mortality to a high of 0.80 per cent to maximise carcass weight and serum immunoglobulin production.