I agree with Gavo and oh how I wish some of the pig keepers I meet over here would read and digest this information instead of thinking pigs can live on bear earth or at best grass, with occasional turnip and scraps thrown over, grow from 6 weeks old to mature sows in 8 months and then produce 10 - 15 piglets who all grow at an alarming rate. All having been fed grass cuttings and rubbish.
Sorry rant over