The fern pig farming cost is 105,000 yuan. According to the query related information, the feed cost of fern pig (calculated as 300 pieces of feed per commercial pig): 350 commercial pigs need to consume feed 350 heads × 300 yuan / head = 100.000 yuan. Fern pig, also known as mountain pig, Minxian East mountainous area of local herdsmen also called it real pig son, is a small primitive local pig species, domesticated from wild boar.