[irixusr]

Unavoidable? Hardly. You just have a veal industry on the side. Milk has been produced for millennia before hormones of any type were added.

Furthermore Canada has milk production quotas so, depending how they're set, hormones might not be necessary to max production at all.

[jobigoud]

You didn't understand GP comment. Cow's milk is the single thing that grows calves hundreds of Kg in a few months. It has growing hormones in it, naturally.