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Forty-four early lactation dairy cows were divided into four treatment groups to examine the effects of processed, urea-treated whole-crop wheat (pWCW), maize silage and carbohydrate supplement type to pWCW on dry matter (DM) intake and milk production. All cows received 8.5 kg/day of concentrate with cows fed the pWCW receiving an additional 2 kg/day of rolled wheat (W-pWCW) or 0.7 kg/day lactose and 1.3 kg/day rolled wheat (L-pWCW) or 2.3 kg/day of molasses (M-pWCW), whilst the maize silage (Maize) treatment received an additional 2 kg/day of rolled wheat. The pWCW or maize forages were mixed 2:1 on a DM basis with first cut grass silage and cows remained on the experimental treatments for 15 weeks. The pWCW and maize silage had a DM content of 823 and 310 g/kg, crude protein of 143 and 76 g/kg DM, and starch content of 350 and 308 g/kg DM respectively. Milk yield was similar across treatments averaging 34.3 kg/day. By contrast, milk protein concentration (g/kg) was higher (P |
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