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When demand from the herd exceeds pasture supply, supplementary feed may be offered to increase dry matter (DM) intake and milk production.
This often comes with an expectation that this increased production will lead to greater profitability.
Recent research into supplementary feeding investigated if NZ pasture-based farms could reduce their reliance on imported feeds while still maintaining profitability.
It found that to maximise the milk production response, supplementary feed should be offered only when there is a genuine feed deficit (less than 1600kg DM/ha residual).