Although the risk of the introduction of any animal disease posed by the find was low, MPI sent a vet to the property where they found all animals in excellent health.
"A find like this one is rare, given that approximately 1.5 million tonnes of PKE are imported annually, Mr Coleman said.
PKE was a vital import for New Zealand's dairy farmers who relied on it for supplementary feed.
Currently, every shipment of PKE must meet strict requirements before it can be imported to New Zealand, including heat treatment, fumigation and inspection.
"A further option being considered is a new levy on PKE imports, or an increase to the existing biosecurity levy to increase the level of inspection in these countries. Any such proposal would have to be consulted on and have industry support, " Mr Coleman said.