Feeding and management objectives: To ensure that sows have more lactation at this stage, less body loss, rearing a large number of healthy, heavy piglets, 80% of the sows after weaning can estrus mating and pregnancy within 7 days. There is currently a problem: during sow feeding, sows have low feed intake, lack of milk production, severe body loss, and no estrus after weaning, and the weight of weaned piglets is generally low. (I) Feeding management of lactating sows 1. 7 days before delivery, the sows enter the delivery room to keep the delivery room dry, clean and hygienically, and gradually reduce the amount of feeding, and less or less material is available for those with poor palates; 2. Prenatal cleaning of the sows' udder and genitals, then scrubbing with a 0.1% potassium permanganate solution; postpartum injection of blue and streptomycin to prevent perinatal diseases; in the hot season, giving the sow muscle one week before delivery Note liver oil - antibiotic mixture to prevent hyperthermia syndrome; 3. During the delivery process, sows must have special care to take care of the environment, keep the environment quiet, clean, dry, warm in winter and cool in summer, and prevent the high temperature in the delivery room. If there is dystocia, it is usually injected intramuscularly with oxytocin. The dosage is 10 each time. -20 units, if no output is produced after 30 minutes, artificial midwifery is required; sows are preferably given uterine cleansing and injections of prostaglandins (post-injection intramuscular injection of PGF2α 2 ml at 36-48 hours). Helps lochia expulsion and uterine reposition, but also helps the sow to estrus after weaning; 4. Sows do not feed on the day of their litter and only feed bran salt water or bran electrolyte water. The amount of feed is gradually increased within 1 week. When the amount of feed is normal, the amount of feed intake of sows should be increased to the maximum; The principle of diligent addition should prohibit the feeding of mildew feeds. In the lactation period, sufficient clean drinking water should be provided to prevent sows from constipation and affect the feed intake. 5. To check the sows' udder in time, the sows who develop mastitis should take timely measures to treat them; 6. Reduce sows by 2 to 3 days before weaning, reduce or reduce the amount of drinking water on the day of weaning, and reduce wrinkles in the breasts 2-3 days after weaning to increase the amount of feed and start aphrodisiac feeding. This prevents mastitis in sows after weaning. (B) Nursing Sow Nutrition 1. The core of nursing sow nutrition is to make every effort to increase the feed intake of lactating sows, and the daily feed intake can be estimated by the following formula: Daily feed intake of lactating sows = 2 kg of feed per day. Each piglet needs a feed of 0.4-0.5 kg. If the sow can feed near the calculation formula, the body loss will be less, otherwise it will use a large amount of body reserves and seriously affect its milk production and subsequent reproductive performance, so that weaning to estrus interval, conception rate and Reduced embryo survival rate; 2. The dietary formulation of lactating sows should be divided into primiparous sow diets and sow diets. The dietary nutritional standards for the first lactating sows are: crude protein 16%-17%, digestive energy 3300 kcal/ Kg, lysine more than 0.9%, calcium 0.85% -0.90%, total phosphorus more than 0.6%; dietary lactating sows dietary nutrition standards: crude protein more than 16%, digestive energy 3200-3300 kcal / kg, Lysine more than 0.85%, calcium 0.85% -0.90%, total phosphorus more than 0.6%; 3. If the piglet is breast-fatted and the sow may have postpartum lactation disorder syndrome, we can use our company's “Hu Li Xiao†series products to carry out stage feeding. Blood Pressure Meter,Relion Blood Pressure Monitor,Boots Blood Pressure Monitor,Digital Blood Pressure Monitor Shenzhen urion Technology Co., Ltd. , https://www.urionhealth.com