I add a concentrate, to my own Barley, "I'm only a small holder in pig keeping, but don't tell everyone in case they think I'm a spy
" it is a protein mix for calfs which I mix to my milled barley but the feed merchant recommended it. I then use the same 1lb per month of life to maximum of 5lb at 6 months of age. My feed merchant did recommend pellets for the last month but won't be doing that again with the current breed I have. I am lead to believe that just grain doesn't have sufficient lysienes in it which means more grain less growth more fat hence the protein additive. I don't use wheat for feed as its easier to send out in a lorry than an animal and with beef colours the fat a pale yellow, not sure with pigs. Feeding I put into a bucket and add water making a very weak porridge which then gets fed straight away to the gang. ( I mill though and don't roll so the barley is broken ought down)
Finally I've not perfected the amounts and I more feed by eye so the breeders have a fluctuating weight and i've had fatteners before a little bit too fat with about 3 cm back fat but I'm slowly getting right. And the majority do the simple way with a bag of pellets so little advice forthcoming so the learning curve will be steep.
But the transport fuel trail to my pigs is small and I know bar 100 kg of concentrate exactly what the gang have eaten.
Finally grain this year for the majority has had a small bushall so that means buying more grain for the weight and more husks not sure if it will effect anything but ~shrugs~
As you can see not so easy... So good luck if you work things out and get things right please send an IM as I'm not too old to learn.
Regards