I would say the answer is very similar for veterinary medicine and products, whether you're talking about a hormone implant or a feed additive, or any other medicinal product used in livestock production to control parasites, etc.
Health Canada has its veterinary medicine directorate, and again they have a very lengthy approval process, so there is tight control over the use of the products in Canada. There are certain obligations, certain requirements, and certain withdrawal periods. Depending on what the product is, maybe it can't be used for a certain number of days before the animal goes for harvesting.
We would expect that through the Canadian Food Inspection Agency any food, whether it's meat or otherwise, that comes into Canada has to abide by those same regulations.