The grease is a by-product of wool scouring and is used in cosmetics, skincare and medicines.
It's only the second time ever monthly exports have topped $1 billion.
Federated Farmers says the workers are "desperately needed".
A2 Milk has launched a strategic review of its business after it was forced to slash its earnings forecast and write down the value of its assets.
It's hoped it will lead to more locally grown wheat being used in artisan pasta, pizza and bread.
The decline was accelerated by last year's drought.
"The dichotomy between the UK's political rhetoric and its reported offers for agriculture is deeply disappointing."
More than a dozen companies have signed up so far
It comes after the dairy company announced a trading halt on Wednesday.
