Once the sow begins to farrow, the whole litter is born within 2 to 3 hours.The farmer keeps a close record of when piglets are born.

• 一旦母猪开始产子，整个产程大概需要2-3小时，农场主应准确的记录小猪个自出生时间，小猪一经出生应立即加强护理。