The 52-year-old peasant He Daifen, Qingyi Palace Village, Fengming Town, Xichong County, Sichuan Province, has raised sows since 1999, and has had 35 sows on hand since September 2004. He has an average annual output of more than 60 litters and annual output. More than 750 heads (average 12.5 litters per litter). The income per litter is more than 2,000 yuan. He Daifen's technique for raising sows with multiple high-yielding production has the following eight aspects: 1. To strengthen sow rearing management. Pregnant sows are divided into primary sows (sows that produce 1 and 2 babies) and sows that are born (that is, sows that have more than three births). Due to different breeds, the appropriate maternal age and weight are: local sows older than 6 months and weight about 60 kg; hybrid sows 8 months old and weighing over 80 kg; foreign purebreds 10 months old 100 kg or more. Whether it is a primiparous sow or a sow, no nutrient level diet can be fed from start to finish during pregnancy. Diets of different nutritional levels must be given based on the physiological stage of the sow and how fast the fetus grows. That is, feeding in sections. Feeding pigs account for 70 to 85% of the energy feed, 2 to 3% of mineral feed, and 10 to 25% of protein feed. Green feed is fed every day, and sows are fed daily to obtain nutrients. The sow's gestation period is 111 to 117 days with an average of 114 days. To facilitate memory, three, three, and three can be used, namely 90 days for three months, 21 days for three weeks, and 3 days for a total of 114 days. The 114 days were divided into two segments, ie 0 to 80 days for the pre-pregnancy and 81 to 112 days for the late pregnancy. During the empty period, mid-pregnancy and late lactation period, the sows were fed more Raw Material and appropriately fed green materials. In the early and late stages of pregnancy, sufficient amounts of protein, minerals and vitamins were supplied during the early period of lactation, and the concentrate and green succulent feeds were provided. To provide a relatively stable living environment for sows and reduce external stimuli such as crowding, driving and fighting as much as possible. After the sow became pregnant, the fertilized egg was susceptible to various factors in the initial stage of the 9th to 13th day of planting. The second death peak occurred on the third day after pregnancy and the two deaths accounted for 30 of the total number of fertilized eggs. At 40%, the third peak of death occurred 60 to 70 days after mating. Therefore, it is imperative to minimize the loss of embryos by strengthening livestock management and controlling the housing environment. The temperature of the pig house should be maintained at 16-22°C, relative humidity 70-80%, and the amount of feed after mating should be reduced to the original low level, but the full price should be guaranteed and the house should be kept clean in order to reduce the infection. opportunity. 2. Arrange the sow breeding season reasonably. It is best to choose the breeding season from April to May, and to breed again from September to October, and repeat the cycle so that the sows can breed in the spring and autumn seasons to avoid the cold and hot winter and summer environment. 3, sow timely breeding. Should be "old with early, small with late, not the old with the middle"; under normal circumstances, 19 to 30 hours after the sow estrus, waiting for the sore swollen sow just began to subside, and filamentous mucus outflow, with It is most suitable to breed the sow when the sow's hindquarters stand still. The first-time sow should start breeding when it is 7-8 months old and the weight is more than 100kg. After sowing, the sows should be observed frequently and they must be reconstituted in time when they are found to have estrus. 4, breeding methods and artificial insemination. It is necessary to use double match (ie, the first time when the estrus symptom response occurs, and the first time, and the time interval is 12 hours.) This can significantly increase the conception rate and the number of litters. If artificial insemination technology is used, the semen of the healthy boar species must be used. Requires more than 40 million spermatozoa per milliliter of semen, sperm activity above 0.6, and strict sterilization of the device. First wash the genital area of ​​the sow with 0.01% potassium permanganate solution, then slowly insert the vas deferens into the cervix. 20 to 30 cm, followed by an insemination syringe, slowly inject 20 ml of semen and perform a second insemination every 12 hours. 5, strengthen the fetal protection measures. 9-12 days after sow mating and easy to abortion 21 days before delivery, measures should be particularly strengthened fetal protection, as far as possible to supply protein, minerals, vitamins and other rich fine material and green and juicy feed, should not be fed froze spoilage feed . Pregnant sows try to avoid mechanical irritations such as crowding, biting, slipping, whipping, scaring and so on. Farm breeding should be detailed records to avoid inbreeding. The prevention and treatment of epidemics should be well done in the venue, especially the prevention of Japanese encephalitis, influenza, and brucellosis, and timely detection of the disease should be found. Abortion abortion, immediately progesterone injection of 15 to 25 mg, and internal administration of sedatives to prevent miscarriage. 6, do a good job sow delivery. 5 to 10 days before farrowing, the production circle is cleaned and sprayed with 10 to 20% of fresh lime water to disinfect the sow's abdominal udder and pus. After the sow has given birth, the mucus in the nose of the piglet is promptly removed and the fetal membrane is torn off. For parachute piglets, first-aid can be performed by tapping the chest, lifting the hind legs, and irritating the alcohol. For the difficult-to-produce sows to do a good job midwifery, so that the sows will have a smooth delivery. In addition, insulation is especially important for newborn piglets. When the piglets are born, the temperature of the tillers must be maintained at 26 to 32°C, and the weaning at 26 to 28°C after one week. 7, do a good job weaning piglets. Pay attention to piglet supplement feeding, that is, pay attention to supplement water, iron and feed, etc., as well as keep warm and cool the sun, prevent pressure. Piglets clean the sow's nipple with disinfectant before eating colostrum. After the sow is completed, the place of origin is cleaned and disinfected, and the sow is sterilized 1-2 times a week and the sow's stool is cleaned in time. Newborn pigs should be kept warm, and a heat preservation tank (box) should be set in the tiller and the room temperature should be adjusted. Within one week, the temperature should be controlled at 32-34°C, within 2-30 weeks at 28-30°C, and the temperature difference between day and night should not exceed 3°C. Piglets should take antidiarrheal medicines in time. Pigs should be given oral guts for 1 day and 7 days at a dose of 0.1 g/day, which is beneficial to reduce the number of piglets squatting and shorten the duration of diarrhea. 1 Replenishment: Piglets grow rapidly and need to make up water in time. When water is replenished, the water quality is required to be clean so that the piglets can always drink clean water, and a clean sink is provided to allow the piglets to freely drink water. 2 Iron supplementation: Iron is an indispensable element for growth and development of piglets. Piglets do not receive sufficient iron sources from their sows after birth, so iron supplementation is needed in time. At present, the method of iron supplementation by drugs is generally adopted, and the selected drugs are selenium-enriched hemopoietin, blood-enriched, and abundant blood-rich. The timely supplement of iron can improve the disease resistance of piglets, promote the growth and development of piglets, and lay the foundation for early weaning of piglets. Within one day after birth, the piglets should have their teeth cut, tail cut, and umbilicus cut off. Intramuscular injection of Cobalt(Iron) iron or Fulai injection (1~1.5 ml) and Oral Gentamicin (0.5 g/head) can be effectively controlled within two days after birth. Cuts, cuts tails, cuts umbilicus, cuts, etc. may cause the infection. 3Feeding: The feeding of piglets can be carried out about 7 days after the piglet is born. Generally, it can be divided into three processes. First, the period of training is about the 7th day of the piglets, so that piglets can understand the feed and eat a small amount. The second is the adaptation period. About 14 days after the piglet's birth, the piglet gradually eats some feed. The third is the vigorous food phase. About 21 days after the piglet's birth, the piglet can already feed more feed. When you feed, you have to add less ground to make the pig eat well. 4 Weaning off: Early weaning of piglets is 28 to 35 days after birth. Weaning is a bigger stimulus for piglets and the correct method must be taken. One of the following methods can be selected: First, gradually weaning method: controlling the number of piglets suckling before the piglet is weaned; second, the method of removing the mother's piglet, that is, removing the sow before the piglet is weaned. Keep the piglets in the original circle. Third, the feed transition method is to gradually transfer the piglets eaten by piglets to piglets before weaning. 35 to 40 days weaned. 8, sows during lactation breeding. In general, sows are given aphrodisiacs 2 to 5 days after weaning. After the sow is estrus, it is necessary to immediately perform breeding during the lactation period in order to increase the number of births per year. Pigs are estrus animals throughout the year. After one week of weaning, the sows will be able to heat. If they are not estrus, the following measures can be used to abrade and promote ovulation: improve feeding management, induce emotions, massage the breasts, Chinese and Western drugs aphrodisiac and treatment. 1After weaning sows do not have estrus, we can concentrate them in one column and transfer them from the original environment. Generally, about half of the sows have estrus symptoms after about 10 days after adjustment. An intramuscular injection of chloro-prostaglandin 1-2 ml can be used, and PG-600 or PMSG can be injected every other day. Long-term estrus-producing sows can be injected intramuscularly with 5 ml of pregnant horse serum or 1 thousand units of intramuscular chorionic gonadotropin. You can also try to feed sows with leeks, 500 grams per head per day, for 5 to 7 days for estrus, with excellent results. 2 In the injection of oxytocin to sows, attention should be paid to the choice of dosage. After sows producing the first three-dipper, intramuscular injection of oxytocin 50 to 70 units can produce better results. 3 When sows are found to have postpartum inflammation, they should be treated as much as possible within 3 days after delivery. The best treatment is to fill the sow's birth canal with topical anti-inflammatory drugs; in addition to intramuscular injection of antibiotics to prevent secondary infection. 4 brown sugar aphrodisiac method. After 500 grams of brown sugar is put into the pan and the fine fire is fried, the water is boiled and 1 kg of water is decocted. After it is dissolved, it is mixed in the feed and fed for 2 to 3 days. Within 10 days, the sows can be estrus. 5 switchgrass aphrodisiac method. Chopped switchgrass (about 80 kilograms of sows, 1.2 kg per day of willow), cut into strips or slices, and boiled in a pot until the lighter, lighter, or tasteless switchgrass Remove the strips or pieces and take the remaining decoction. For long-term non-estrus sows, the decoction is mixed into the pig's food three times a day. The 7-day course is a course of treatment. Most sows will start estrus after a course of treatment. In heat, the cure rate can reach 91%.
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