In large-scale pig farms, in order to strengthen empty-breeding, feeding and management of pregnant sows, promote sow oestrus and breeding, prevent stillbirths and abortions, increase the number of litters, increase the number of litter weights, reduce the incidence of piglets, increase weaning weight and raise The effectiveness of the pigs and the strengthening of feeding and management of the vacant and pregnant sows are as follows: Second, management technology Guangzhou Zhongzhinan Supply Chain Co.,Ltd. , https://www.gzzhongzhinan.com
First, feeding technology
1, dietary nutrition needs:
Nursing and pregnant mother-feeding dietary nutrition requirements: crude protein 14%, digestive energy 2900 calories, kilograms, lysine 08%. Vitamins A, D, and E have a great influence on the reproductive performance of the mother quail. The requirements per kilogram of feed are: vitamin A3000 international unit, vitamin D [6oL~international unit, vitamin E8 international unit
2, empty sow breeding:
Large-scale pig farms adopt the early weaning technique of 2t or 28-day-old piglets to wean their sows to their breeding sheds. They must carefully observe the estrus of the sows, do a good job of mating and recording the sows, and take effective measures to strengthen the management of feeding. Short-term excellent feeding: Sows are fed whole-rate high-quality nursing sow feeds after weaning. The daily feeding amount is 2.5-3.2 kg. Feed three times a day and drink plenty of clean water. Pay attention to calcium, phosphorus and vitamins A, D, E sufficient supply. L2l weaned sow rearing: In the recovery column, it is appropriate to raise 3-4 sows per lap, each floor area requires 1.8-2 square meters to strengthen the movement and contact with the sun most sows 3-10 days after weaning, early 3-5 days heat. Therefore, it is required to check the estrus of the sow 3 days after weaning or to drive the boar to the vicinity of the sow, so that the sow is stimulated so that it will heat up as soon as possible. When sows are estrus, they must be bred in good time. For sows that are lean, increase the amount of feed and require mating at the 2nd heat. Improve the conception rate and litter size. For some obese sows, limit feeding and increase exercise. To reduce it, if necessary, injection of chorionic gonadotropin or 80-1000 units of pregnant horse serum, promote estrus, breeding.
3, feeding pregnant sows
Pre-pregnancy feeding: From mating to 84 days before pregnancy, in order to improve production efficiency and farm equipment utilization rate, the sow should be transferred to the limit bar for 30 days after the pregnancy is confirmed, and immediately reduced. Each sow feeds 1.8 to 2 kg of pregnant sows on a daily basis. Provide sufficient drinking water. If there is too much feed, the sow's intake of excess energy can easily cause embryonic death or poor embryo development.
Feeding late in pregnancy: After 84 days until the end of pregnancy, it is during the rapid growth and development of the fetus that the amount of feed needs to be increased. The nutritional requirements for diets are as follows: crude protein is 15%, and the daily feed volume is about 2.5-3 kg. The first born sows are slightly later to prevent the fetus from being oversized and causing dystocia. Supplementing green feed can effectively prevent constipation of sows, significantly reduce stillbirths and mummy, and reduce diarrhea in piglets. Sows can be given intramuscular injections of vitamins A and E 2 weeks before delivery to enhance sow physique and reduce stress. 5 days before delivery, they should gradually reduce the amount of feed, feed 2 kg of feed on a daily basis, and do not feed on the day of delivery. material. Drink plenty of clean water, feed a small amount or feed the right amount of wheat water during the winter and spring cold seasons. Before a sow enters the farrowing house, it is necessary to do a piglet and sow pig body disinfection. Pay special attention to the cleanliness and hygiene of the sow's breasts and nipples, and beware of unclean breasts and nipples to prevent diarrhea and other diseases after the piglets have sucked milk.
1, the word is good grasping cold and warm, heatstroke cooling work: the sow the most suitable ambient temperature is 15-16 °C. Fu is 60% to 70% cold in the cold season. Be careful to close the door. Anti-thief winds invade and avoid cold, flu, and other diseases in sows. Pay attention to ventilation and maintain fresh air and dry pigs. Summer hot weather, if the room temperature exceeds 30 °C, we must do a good job to prevent the heat and cooling work, should be installed in the roof foam insulation board, play the role of summer and winter cool, summer room temperature can drop 7-8 °C, room temperature 30 °C above, each Secondary spray cooling 15-20 minutes, the pig bar and pig body washed 1-2 times a day, a good cooling effect.
2, fetus and promote fetal growth and development
1. Pregnancy: The sow has not been implanted within 2 l days of pregnancy. It is necessary to reduce heat stress and other stimuli to avoid causing embryonic death. When driving sows to exercise, they should not be too fast and scared. In particular, heavy sow exercise should be appropriate. To avoid slipping leading to mechanical miscarriage. In the hot season, determine the intramuscular injection of 5 ml of progesterone for each sow 30 days and 80 days after the pregnancy. 2. To promote fetal growth and development: 30 days, 40 days, 90 days after the determination of sows, respectively, intramuscular injection of 1% sodium selenite vitamin E5 ml, promote early embryonic development and rapid growth of the late fetus.
3. Movement and light: In large-scale pig farms, sows are kept for a long time at the limit bar/high bed and lack of exercise. Therefore, the farm must have a playground, and the sow should have plans to limit the movement of the bar, high bed, sow house, sports field rotation, and exposure to sunlight. At night, use the sun light for more than 2 hours to stimulate the skin's synthesis of vitamin D, promote calcium and phosphorus metabolism and absorption, reduce limb and foot disease and dystocia, promote sow secretion of estrogen, early estrus and breeding, and increase reproduction rate.
4. Sanitizing and disinfection: During the cold winter season, diligently clean up the excrement and dirt. Every 3-5 days, when the weather is warm at noon, use high-pressure water to wash the pig house and pig body. In the summer, it is required to rinse 1-2 times a day to keep The pig house is clean and hygienic, and uses various kinds of disinfectants such as high-efficiency non-toxic or low-toxicity disinfectant, for example, disinfecting pigs with pigs and pigs by disinfecting with Vitex and using 1:500 alternately. Strengthen the disinfection of fruit, disinfect every 7 days to use 4% to 5% caustic soda to sterilize the environment. Disinfect once every 10-15 days. At the end of summer and early spring, it is the season of growing mosquitoes and mosquitoes. To keep the environment clean and hygienic, 2% dichlorvos is used regularly to spray the pig house space and environment to kill mosquitoes and mosquito bites to cause infectious diseases such as JE and pig erysipelas.
Focus on empty and pregnant sows