Thanks everybody. Pigs don't eat enough solid food (ie what I put out) to be worth buying in pig nuts (£11/20kg). They original idea was to range them to keep them trim (both my husband and I cant stand fatty meat) Didn't realise how much grazing would impact on food intake though, we were expecting 80%pig food 20% grazing but its the other way around. (not that I'm complaining just concerned)
They are 4 months now and by grading I mean 3 on the newcastle scale (firm pressure with flat of hand required before bones felt) number 4 (firm presure with fingertips required) is obese and 2 (bones felt with light presure) is underweight.
yes he does one mix for cows and another for pigs. He suplies beef for tescos finest range so i am confident he knows what he is doing. It was the fact that i seem to be throwing so much away i was woried they arnt geting enough in. I used to put out 1kg per pig I am now down to 300g per pig and still most of it is left. they have seperate buckets and i watch they closely at feading no-one misses out they just seem to get bored after 7 minuets and go back to roaming, i have even left the buckets out all day and the next morning they were still half full. I wormed them incase that was the problem but no change.
just lately I have found small bones in their poo and more than once these past few weeks I have seen one or the other being mobbed by birds maybe they have been snacking on frogs and chicks....
think looking at these posts I'll give the milk a miss thanks everybody