Murray Goulburn milk supply fell 20.6% (to 1.6 billion litres) from July 1 to December 31 2016, compared to the same time in 2015.
Interim chief executive David Mallinson today told MG suppliers that Mr Smith will lead the Field Services, Supplier Services and MG Trading store teams for a six-month period starting from January 9.
As a consultant at Farmanco Pty Ltd, Mr Smith has experience providing physical and financial management advice to a large group of farmer clients across Northern Victoria and Southern NSW.
He also frequently consults to organisations associated with the dairy industry as well as other service providers in the region.
It was announced in early December that Robert Poole would leave MG to join KPMG, ending almost nine years with the company.
Mr Poole will be the latest in a string of senior staff to leave the organisation since the shock cut to farm gate milk prices earlier this year.