Do a good job in preventing flow and protecting tyres

There are two dangerous stages: one is 10-30 days after fertilization. At this time, the fertilized egg has just been implanted, and the placental foundation is not formed until about 1 month, and the embryo is not firmly combined with the uterus, so it is easy to die or be absorbed, and it is also easy to form a mummy; second, the last month of pregnancy. In this period, due to the rapid growth and fierce development of the fetus, the abdomen of sows is quite inflated, which is easy to cause abortion. Prevent miscarriage: 1. To ensure the nutritional level and full price of sow diet to prevent the fetus from dying due to insufficient nutrition or incomplete price. It is strictly forbidden to feed moldy and spoiled feed. two。 Strengthen management to avoid some mechanical injuries. 3. In order to do a good job in disease prevention and control and prevent heat stress, attention should be paid to sanitary disinfection and disease prevention and control. Especially some febrile venereal diseases, such as brucellosis, parvovirus disease, pseudorabies, leptospirosis, Japanese encephalitis and so on.