Initially, Welisara Farm was managed by the Department of Animal Production & Health and subsequently, it has been taken over by National Livestock Development Board in 1992. The expansion and improvement programs were funded by an Asian Development Bank project. This farm is situated 2km off Mahabage Junction on Mahabage-Ragama road. This is the only Government owned Pig Nucleus Breeding Farm in Sri Lanka, and it is an extent of 8.3ha. Pure lines of Land Race large white and Duroc Breeds are maintained as the foundation stock. The breeding materials are supplied to the registered multiplier and commercial Pig Farmers from this Nucleus Breeding farm. The pig Breeding activities are planned to obtain the maximum advantage from the acquired heterosis or hybrid vigour after cross breeding above breeds at multiplier and commercial levels. Presently farm issues pure breeds of large white, Land Race and Duroc breeds of Pigs for breeding with two way and three way cross Pig lings for fattening.