Sow feeding management tips
1. Give sows a daytime calving: 1 to 2 ml of prostaglandin injection in the neck of the sow at the sow's neck 1 to 2 days (112 to 113 days after pregnancy) at 8 to 9 am , 98.2% of sows can be delivered in the daytime during the day, the effective rate of up to 100%, the survival rate of piglets increased from 90% before the test to more than 98%. 2. Allowing sows to give birth in the spring and autumn: Sow farrowing is arranged in spring and autumn to avoid cold winters and hot summers, which can increase the survival rate of piglets and achieve five-child births in two years. The first child can be arranged for breeding in November-December and will be born in March-April of the following year. The second child will be placed in the breed from May to June and the child will be born from September to October. 3. Increase the calf's calving rate: 3 days after weaning to estrus, feed each day with 400 mg of vitamin B, 400 mg of carotene, 200 mg of vitamin E, halve the dose after breeding, and then feed for 3 weeks. Each fetus can produce 2-3 pigs. 4. Early sow pregnancy diagnosis: sow breeding 3-4 weeks, using the thumb and index finger to press the 9th thoracic vertebra to the lumbar back between the 2nd lumbar spine, such as a slight arched back who is conceived, the back of the concave not Pregnancy. 5. Calculation of sows' expected date of birth: The normal gestation period of sows is 108-120 days with an average of 114 days. Calculate the method of sow due date: Adding dates plus 3 months plus 3 weeks and 3 days. If the sow mating date is April 20, the expected date of birth is 4+3=7 (months) and 20+21 (3 weeks)+3 (days)=44 days, which is August 13. 6. Sow artificial aphrodisiac: For long-term non-estrus sows, 20 milliliters of boar semen were used. The seminal fluid was slowly transferred into the uterus of the sow by the vas deferens, and the vas deferens was continuously rotated and twitched back and forth. At the same time, sprinkle a small amount of semen on the nose of the sow. Strengthen feeding, and estrus can be used for breeding within 4 days. Or sow 75-100 kg of sows intramuscular injection of human chorionic gonadotropin 100 units, or subcutaneous injection of human serum 5 ml, usually 4-6 days to heat. 7. Sow prolactin: The placenta of the sow postpartum rinse with clean water, cut into small pieces 4-5 cm wide, 2-3 cm wide, slow fire boiled 1-2 hours, will be mixed into the thin porridge From the 2nd day after childbirth, sows are fed twice a day until feeding. The sows that have been suffering from short-acting milk have been fed with 30 grams of ginseng, 20 grams of angelica, and 30 grams of decoction of astragalus, which are fed together with cooked tires. Or use 250 grams of kelp, soak up and cut fine, add 100 grams of lard Jiantang, fed one day each morning and evening, once every two to three days, the amount of milk secretion can be greatly increased. 8. Timely breeding is the key: Under normal circumstances, the appropriate breeding age is: local breed 6-7 months of age, weight 50-55 kg; hybrid generation sows 8-9 months of age, weight 65-75 kg; foreign thin Meat type 9-10 months old, weight 110 kg. Adhere to the "old with early, small with the evening, not the old with the middle." Usually in the sow 19-30 hours after the estrus, until the sow swollen vulva just began to subside, and the outflow of filiform mucus, press the sow hindquarters can stand when the dim still. Artificial insemination, strict disinfection. 9. Strengthen the fetal protection measures: 9-13 days after mating and 21 days before delivery, sows are prone to abortion. Supply concentrates rich in protein, minerals and vitamins and succulent green feed. Frozen and rotten spoiled feeds are forbidden. Abortion aura can be used Astragalus 100 grams, Atractylodes, licorice, Angelica, Angelica, Astragalus, Amomum each 50 grams, 75 grams Dipsacus, thick fried, 2 daily, for 3 days. 10. Prevention of Diseases: (1) Inflammation of the genital tract, take 1 tablet of acetic acid washing and secreting, insert 5-6 cm from the vena vulva, advance 5-6 cm, and light 1 time. (2) Postpartum sputum, take lime and appropriate amount of fresh water, and stand still after stirring. Each time before suffering from a pig, take 300-400 ml of lime water solution, mix it with feed and feed it for 7 days. (3) Mastitis, take 15 grams of Angelica, habitat, terracotta, silver flower, red peony root, Chuanxiong, Prunella, licorice, and decoction. (4) Endometritis, taking 15 grams of Yinhua, Coptis, Anemarrhena, Phellodendron, Plantain, Poria, Alisma, and Glycyrrhiza, decoction, and in combination with antibiotics, better.