Farrowing crates were recently ruled to be unlawful.
Without enough shearers, sheep will suffer in the summer heat.
The standards were "unlawful and invalid", the court ruled.
MPI said this sort of poor treatment of animals "will not be tolerated".
A Northland farmer has been found guilty of mistreating rodeo animals after a group of lawyers took a private prosecution against him because MPI would not.
"Farmers and the Government now need to decide what's more important to them: rodeo or exports."
MPI said the sentence should "act as a warning" for people who neglect their responsibilities to animals.
The SPCA says some dogs at the property were "broken and terrified".
Hotter than average spring temperatures have caused the spike.
