County Cavan rich in minerals, but heavy and poorly drained, making pasture farming the dominant farming system in the county. There is a total farmed area of in the county, and there are approximately 219,568 cattle in Cavan. Lakeland Dairies Group, which is based in Killeshandra and has manufacturing sites located throughout Cavan, is Ireland's second largest dairy co-operative with an annual revenue of €545 million. Cavan is one of Ireland's leading counties for pig production, with the county's farms raising a fifth of the national pig herd. Pig farming regulations have put pressure on the industry, which is highly dependent on
Books of Survey and Distribution include: "Proprietors in 1641 by the Civil Survey", "Denominations of lands by the Downe Survey", "Number of acres distributed", "persons to whom distributed" and "Rent per annum payable to His Majesty". The surviving Survey and Distribution volumes cover the following counties: Kilkenny, Waterford, Kerry, Kildare, Carlow, Wexford, Longford, Mayo, Tipperary, Monaghan, Armagh, Limerick, Westmeath, Clare, Roscommon, Galway, Cork, Down, Antrim, Leitrim, Sligo, Cavan, Fermanagh, Laois, Offaly, Wicklow, Donegal, Londonderry and Tyrone. The Books for Clare, Galway, Mayo and Roscommon have been published by the Irish Manuscripts Commission. For other counties, manuscript copies are available at the National Library.Those for co