Chinese Meishan pig is well-known for its high prolificacy and superior meat quality.In order to detect the current situation of the conservation population,the sequencing data of 143 pigs from the four state-owned conservation farms were selected in this study.We found that all of the farms have low effective population sizes.The Middle Meishan populations have a higher proportion of polymorphic markers,and the Small Meishan populations have a higher observed heterozygosity and expected heterozygosity.It h...