Pig Farmers Mr. Lawrence asked the Minister of Agriculture, Fisheries and Food how many farmers have gone off pig production in the past 12 months. Mr. Bishop No figures relating to changes in the number of farmers engaged in pig production over the past 12 months are available. The June census records the numbers of holdings on which pigs are kept. The latest figures relate to June 1976 when there were 32,300 such holdings in England and Wales.