1. After 3 days and 8-25 days of deployment, high energy will result in the death of the fertilized egg and failure of planting, resulting in an increase in the proportion of empty arms and a decrease in the number of litters. 2. During the mid-pregnancy period of 70-90 days, high energy levels will lead to poorly developed sow breast development and decreased postpartum lactation performance. Second, sow feeding program 1. Immediately on the day of sow mating, the amount of feed was reduced to 1.6-1.8 kg/day and transferred to pregnant sows (crude protein content 14%). The nutrition obtained by the sows is always given priority to the developing embryos, and the embryonic needs are very small. Under normal circumstances, the nutritional level during pregnancy is unlikely to affect litter size. 2. After 40-60 days of feeding, pregnant sows feed 2.0 kg/day. 3. After 60-90 days of feeding, pregnant sows feed 2.0-2.5 kg/day. The period of 35-90 days of sow pregnancy is growth, body reserves, body condition adjustment and recovery period, appropriate reduction or feeding of over- or over-weight sows so that pregnant sows can reach a good state before delivery. The P2 backfat at the time of delivery of the secondary sows should be 18-19 mm. 4. Pregnancy 90 days—feeding sow feed 2.5-3.0 kg/day. (crude protein content 16%) 1 This period is the period of rapid fetal growth and breast growth. It is recommended that no matter the gilt or sow, 9500 kcal digestive energy/day should be eaten. 2 Prenatal sows feeding too much will reduce the appetite of sows postpartum, reduce feed intake, affect sow lactation. 3 It is not cost-effective to increase the birth weight of piglets by increasing the amount of feed through prenatal sows. 5. Suckling sows - Feed amount is calculated as 3Kg + 330g bred/head sows. Feed less frequently or eat freely. 1 During sow feeding, sows should try their best to increase the number of feedings, such as 4-6 meals. Feed more in the morning and evening in the summer and feed less at noon. 2 Excessive dropping of sows during lactation can affect normal estrus and the number of next litters after weaning. Take as many and thin sows as possible to feed. 3 In the summer, due to the decrease of sow food, attention should be paid to adjusting feed nutrition. 4 Pay attention to cleaning the leftovers in the trough to prevent the sows from eating mouldy feed. 6. Weaned sows—The sow reduces the amount of feed to 3.0-3.5 kg/day on the day of weaning and feeds sow feed. After sows are weaned, pigs with different lyrics should be separated to avoid the elimination of weak pigs due to injury. Columns of first-born weaned sows should be raised, and lean sows and first-pigs should be properly fed to promote estrus as soon as possible. May cause some sows to be eliminated sooner (lean sows are mostly farrowing, with more litters and better sows). Third, pregnant sows should have a moderate body condition 1. Overweight: Due to abdominal fat tissue oppression of the uterus, affecting the development of the fetus, the output is weak, postpartum is also prone to loss of appetite, constipation, lack of milk, lactation and other adverse consequences of falling too fast. Some pigs can overwhelm the pigs because of excessive fat and inconvenient postpartum mobility. 2. Too thin: Inadequate nutrient intake affects the development of the fetus and produces weak infants. At the same time, due to lack of adequate nutrient reserve in the body during pregnancy, postpartum lactation consumes large amounts of nutrients, resulting in insufficient postpartum lactation and affecting piglets. The growth and development itself is also too serious because of dropping, which affects the normal estrus and breeding later. Fourth, breeding pig breeding points 1. Effect of feed mycotoxins 2. About 25% of the world's cereals are affected by mycotoxins every year. In recent years, the immunity of pigs has decreased. The effect of feed mycotoxins is one of the reasons. 3. Pigs are sensitive to mycotoxins. When the sow feed is contaminated with F 2 toxins, it is often seen that the vulva is red and swollen, the mammary glands are enlarged, embryonic death is increased, regrowth, miscarriage, estrus, uterine detachment, prolapse and other symptoms. Fifth, the period when sows are most afraid of high temperatures 1, within 3 weeks after the allocation, high temperature will increase the death of fertilized eggs, affecting the embryo in the uterus, planting, return rate increased. 2, 3 weeks before delivery to childbirth, due to piglets growing too fast, the pigs will reduce the blood supply to the uterus in order to fight heat stress, resulting in insufficient blood supply to the piglets, weakening or even death. Six, pregnant sow management 1, sow breeding immediately transferred to a single column feeding the same day and reduce the amount of feed. 2, breeding - 3 weeks and 3 weeks before delivery - pregnant sows to give birth in the summer to strengthen the cooling work, can reduce early abortion, avoid premature or weak yield of sows. Seventh, summer cooling 1, delivery house: 1 Sucking water in the head and neck of the sow--must have a current to be effective 2 spray cooling - can not cause excessive humidity 3 Hair - cannot be directly blown onto the piglet 4 suction ventilation or water curtain cooling - pay attention to the insulation of newborn pigs 2, breeding pregnant housing: 1 flushing cooling - must have a stream to be effective 2 Hair - 3 spray -------- 4 When the ambient humidity is greater than 80%, the cooling effect through water is not significant. Whether it is dripping, spraying or flushing, it must be driven by wind. Eight, drinking water 1. The water pressure and flow rate of the drinking fountain should be appropriate. The water flow rate of the drinking fountain should be 2000ml/min. 2, 15-20 liters of water per day in winter and 30 liters in summer. 3, low water pressure (whether in summer or winter) will: reduce feed intake, lactation decreased; weight loss increased by 7-9 kg. 4, high water pressure (whether in summer or winter) will: water to stimulate the throat, reduce drinking water, reduce feed intake, lactation decreased; bar housing humidity is too large, easy to piglets diarrhea. 5, the height of the drinking fountain should be appropriate. Too high - difficulty drinking water, reducing drinking water; too low - unable to drink water and cause wastage. 6, the water temperature is too high or too low will also affect the feed intake of breeding pigs. Water pipes should be buried under the soil to prevent sun exposure and excessive water temperatures. When the winter temperature is lower than 7°C, proper heating of water when feeding wet materials can increase feed intake. Nine, sows giving birth 1. The sow's delivery process takes about 2.5 to 3.0 hours. If the interval between births is too long, check whether dystocia occurs, and give birth or oxysterone in time. If after a long period of time, the placenta should not be dealt with in time. 2. The sow's gestation time is 112-120 days, which is normal. Usually there are still no litters to produce ovulation after more than 118 days to avoid severe uteritis caused by stillbirth in the uterus. 3. Intravenous infusion of 5% glucose physiological saline 1500-2000ml during sow giving birth, sows born 3-4 fetuses started intravenously, the first bottle was added Houttuynia 15-20ml+VitC20ml+VitB (composite) 20ml+antibiotics (such as florfenicol, cephalosporin, tylosin, etc.); 20 bottles of oxytocin and 20 units of gilts were added to the last bottle, 10 units of sows were born, the rate of infusion slowed, and the last bottle was Glucose should be instilled when the sow is nearing production. 4, do a good job of postpartum nursing work to prevent sows postpartum aplastic syndrome. Daily check of the sow’s mental status, appetite, body temperature, sleeping position, vaginal discharge, breasts, etc., and immediate treatment of abnormal sows. Tenth, sow constipation When constipation occurs in the sow, the feed intake will be reduced, the milk production will be decreased, and post-partum milkless syndrome will occur. Prevention: 1, Glauber's salt 10-30 grams / head once a day. You can also sprinkle 1 tablespoon of medicine on constipated sow diet with 0.5% potassium chloride or 1% magnesium sulfate. Or each sow is fed 50 grams of artificial salt daily. 2, check the drinking fountains to ensure adequate drinking water. 3, feed green feed. 4, feeding wet material. Electrocoagulation Instruments Electrocoagulation Instruments,Laparoscopic Bipolar Forceps,Bipolar Forceps,Insulated Grasping Forceps ZHEJIANG SHENDASIAO MEDICAL INSTRUMENT CO.,LTD. , https://www.sdsmedtools.com
Ten points for raising sows
First, the sows are afraid of high energy intake for several periods