The new method of producing three litters per year for sows overcomes the problems of high cost, severe toxic and side effects, easy failure, and poor piglet quality of traditional sex hormones. It is worth promoting. First, Chinese medicine. Woody, hematoxylin, wood pass, trigonous, hornbush, dried tangerine peel, green skin, rehmannia, angelica, safflower each 30 grams, 5 grams of banyan, boiled with water, add 1.5 kilograms of white wine, soak for 10 days in reserve, At 8 o'clock on the 105th day of pregnancy, sows were given chloroprepronol 15 mg per intramuscular dose and were given litter during the following day. Postpartum should strengthen the management of mothers and piglets, increase intensive feeds, and supplement green feed. The sow used 20 ml of medicinal wine to mix in the concentrate every day, that is, it was fed immediately. Each of the four vitamin B and E supplements was supplemented daily. Vitamin B prevents the sows from breastfeeding too much and causes deficiency in the body. Vitamin E improves sow reproductive system function to facilitate mating and pregnancy. Second, 10 days after farrowing, you can induce estrus breeding. 1 Separate mother and piglet for operation. 2 Apply oil to the soft rubber ball and artificially rub the vagina for 5 to 10 minutes to stimulate sexual desire. 3 Spray 1 ml of semen in the artificial vas deferens into the nasal cavity of the sow, and the odor of the semen stimulates the estrus. 4 continue to rub the vagina mouth for 10 minutes, so that the sow has a strong sense of pleasure, stimulate the pituitary gland to secrete follicular ovary hormone, promote estrus ovulation. 5 The artificial insemination tube is inserted into the vagina for 15 to 18 cm, and then slightly trembled about 5 to 10 minutes, so that the sow reaches orgasm, that is, 3 to 5 ml of semen is pushed in and 5 to 10 minutes of shaking is continued. Vas deferens. 6 Continue to rub the vagina mouth for 10 minutes. 7 Allow the sow to cool for 30 minutes alone and return it to the piglet group. Should pay attention to matters: 1 wine only fed 10 days after mating ban feeding. 2 Avoid overfeeding vitamins to prevent poisoning. 3 After taking out the artificial vas deferens, stop rubbing the mouth of the vagina because of trouble. Because the sow is still in the orgasmic reaction, suddenly stop stimulating, it will cause the body to feel uncomfortable, stop uterus levator muscle contraction, reduce the sperm-egg encounter opportunity. 4 The pregnant sows should strengthen management, exercise properly, reduce scaring, regular qualitative and quantitative feeding, and balance the full price of pregnant pig pellet feed. 5 pairs of piglets to take early iron, early eating, early immunization, early weaning, early castration, early repellent, early stomach, straight-line fattening and other technical measures. Surgical Oxidized Regenerated Cellulose Hemostatic Material Cellulose,Oxidized Regenerated Cellulose,Surgical Oxidized Regenerated Cellulose,Oxidized Regenerated Absorbable Cellulose Shaoxing Aladdin Enterprise Co.,Ltd , https://www.xhemostat.com