Of those, 392 cows were categorised by inspectors as being in urgent need of attention. MilkPride's guilty plea relates to this group of animals.
Federated Farmers Dairy chairman Willy Leferink said the actions by the company were not representative of dairy farming.
New Zealand had strong laws on animal welfare, he said.
"We don't pay lip service to it and it is central to good farm management.
"This was also reinforced yesterday by the Animal Welfare Amendment Bill being introduced into Parliament.''
The guilty plea to the representative charge will save the taxpayer the expense of a longer trial, Mr Leferink said.
"A happy cow is a good producer so maltreating them not only destroys value, it hits production.
"That's why farmers know that good animal welfare is good for business, just as bad animal welfare is self-destructive,'' Mr Leferink said.
MilkPride will be sentenced later this month.