From birth to 3-4 weeks of age, the piglets are with the sow in the farrowing house.
小猪从出生到3 -4周大的时候，这段时间小猪和母猪是在产房里度过的。
Landrace sow was culled out after 8 farrowing, in order to increase producing profit.
建议长白母猪在产完8胎后立即淘汰，以提高生产效益。
If sow herd is vaccinated, especially pre-farrowing, then it is even more important to vaccinate pigs later.
如果母猪免疫，尤其在产前免疫，仔猪则免疫更嘉推迟。
If sow herd is vaccinated, especially pre-farrowing, then it is even more important to vaccinate pigs later.
如果母猪免疫，尤其在产前免疫，仔猪则免疫更嘉推迟。
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