I see the usual "US milk is full of hormones/chemicals" crowd is out posting their fear-mongering rumors...planted no doubt, originally by the dairy cartel. (myth started in the 1980's, and relates to what is standard practice in all animal husbandry. Without these various antibiotics, etc., you would have herds dying off regularly - and making the news.)

Ask someone from a cattle operation - dairy or otherwise  - in Canada. Antibiotics, etc., are standard practice. Perhaps the USA has approved/uses different products, but by no means are Canadian operations "all natural" or "organic" by any stretch of the imagination. 

It is the same as the rumors planted by the US healthcare industry about "single payer"...

Funny how when you are outside, you can easily see the errors in belief about what is going on elsewhere, totally oblivious to the  falsehoods you hold true...