1 empty period. This period needs short-term advantage to provide feed equivalent to heavy fetal period. Attention should be paid to the nutrition of sow feeds. Enough protein feed should be ensured, that is, feeds rich in protein such as cakes or fishmeal, only cornmeal, bran, etc. Hey, the sow will not be estrus or be infertile repeatedly. 2 sow breeding. Timely mating is the key and guarantee for improving fertility rate and litter size. Using artificial insemination technology can better guarantee the birth rate and the health of piglets. 3 during pregnancy. About 21 days after the pregnancy, the implantation period of the embryo is the period that determines the farrowing rate of the sow. Therefore, besides ensuring the high protein feed, the sow should not be scared. Prenatal January, eat less and more meals, avoid squeezing the fetus, worming 2 weeks before birth, calving 1-2 days, for clean drinking water, water to increase folic acid and other anti-emergency. Lh Ovulation Strip,Lh Ovulation Cassette,Ovulation Rapid Test Strip,Diagnostic LH Ovulation Test Kits Weihai Kangzhou Biotechnology Engineering Co.,Ltd , https://www.weihaikangzhou.com