There are two means of converting dairy animals to organic production:
1) Animals from conventional sources must be maintained under organic management for 12 months prior to sale of any products as organic. Replacement animals may be added to the herd after a similar 12-month conversion period.
2) If an entire, distinct herd is converted, a one-time allowance is granted to permit feeding of up to 20% non-organic feed for the first 9 months, followed by 100% organic feed for three months. If this type of conversion is made, all replacement animals must be managed organically from the last third of gestation.