I've only got 40ac in total over 7 fields! Might have to have a re-think on numbers! Thank you.200 twin ewes at 5/ac is 40ac. You can send them to a bigger field as soon as the lambs follow the mother. I start off with a higher stocking rate than that, then draft them off if they happen to be near one of the gates. Nothing to rigid, unless we have no grass growth at all, when drafting off to more grass becomes more pressing.