Mathematical relationships and computer routines for a model of food intake,liveweight change and wool production in grazing sheep

The model predicts the selection of herbage from pastures containing green and dry clover and grass, intake of digestible organic matter and nitrogen, and changes in liveweights and wool growth in Merino wethers. Details of the prediction relationships and their derivation are given. Sensitivity analyses were done and the reason for poorer predictions on clover dominant pasture found and corrected.