Composition* of Vitamin D mushroom (VDM) solids, base feed, Control and VDM feeds, formulated from either 5% Vitamin D mushroom solids and 95% base feed (w/w, as is), or 100% base feed, respectively.

Standardised differences between VDM and Control feeds are shown as a percent of total solids. The moisture content of VDM solids and base feeds are taken into account but the moisture content of VDM and Control feeds were assumed to be equivalent.*Methods used for analysis of VDM solids are described in Methods. Unless otherwise stated, analytical specifications of base feed were cited from information provided by supplier.#Standard base feed containing 0.05 µg/g (2 IU) Vit D3 was fed for the first 8 weeks.ND = not detected.