I thought it was all of canada they made you use them but wasn't 100% sure

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Yes country wide - and its coming that you'll have to report each time an animal is transported to another location. Even if its just down the road to another pasture. Its going to be a pain in the a$$, Everyone is going to need a premise identification number, if you don't have one already - which is different then your property ID number and record everything on the CLIA website.
-Sell one to the sale barn/ another person you have to report that it left your property. (so you need to know the barns or new owners ID to fill out the report)
-Sale barn also has to report that it left their property even if its a couple hours later
- Trucker needs bill of lading with all numbers on board each time a cow steps on a trailer - not sure if he has to submit a report though.
Id have to look into if you need to report incoming as well, cause then the guy that bought it would need to report as well - reported 3-4x that day in that case.. I can't recall on the incoming or what the trucker does, was at a meeting on it last spring. NO ONE was happy about it. The office pigs were in their glory telling us about it though.
They say its for health reasons so if there's an 'out break' they know roughly how many cattle are in each area.. I say horse sh1t - they already know that info, they just want to track everything more precisely to ensure they're getting their taxes and check offs.
If you rent pasture you need to get premise ID's for it also, if the owner doesnt have one already.