Small matter, bought in silage and grain should be farm assured, needs a piece of paper to say so from the seller, been pulled up on this myself.No they do change ovenight. When they get to the magic day they become FA the day before they weren't. It may take 90 days to getthere but they don't have to be born on a FA farm.
Can a lamb become welsh lamb after a few months or a beef animal become Scottish beef after a few months? No. So why does it become FA? Does the silage grain that you buy in have to be certified FA? Mine has to be certified organic.
You started the slating with the straw comment i am just returning the favour. Those that live is glass houses shouldn't throw stones!
I do have respect for my conventional fellow farmers. I have praised many in our vets practice and the vets for their hard workis seeing the levels of CIAs being massively reduced. We haven't used any here for nearly 12 years.