''We all committed to make a decision about the next steps in the M. bovis response within the next couple of weeks. We talked about phased eradication and long-term management.
''It is a difficult choice that we will make together once we receive more advice from the Technical Advisory Group in the coming days,'' he said.
The Government and farming groups were committed to improving the National Animal Identification and Tracing (NAIT) system which had not worked as well as it should have, Mr O'Connor said.
In ASB's Commodities Weekly, ASB senior rural economist Nathan Penny said the disease had the potential to reduce New Zealand industry productivity via increased animal health costs and lower production.
Lower New Zealand dairy production was normally offset by higher dairy prices. However, there was a risk that the disease's impact on net dairy incomes was negative, particularly in the short term, as management of the disease might take time to develop, Mr Penny said.