First, the physiological characteristics of lactating piglets The pig is a constant-temperature animal, and its body temperature has been kept at 38.7°C-39.8°C. It has a strong metabolism, fast growth and physiological immaturity. 1, digestive organs underdeveloped rely mainly on breast milk for food Gastrointestinal piglets have small gastrointestinal volume, lack of gastric acid, and no activity of pepsin; and the gastrointestinal tract has a high pH and lacks resistance to enter bacteria, so piglets are susceptible to disease during lactation, especially jaundice and tinea corporis. 2, body temperature regulation function is not perfect The body's thermoregulation function is immature and poorly regulated. Coupled with thin fat, thin coat, weak resistance to cold and other factors caused by poor insulation. 3, underdeveloped immune system After the piglets are born, they rely on the sow’s colostrum to deliver some antibodies, and their own immune system does not function until after 30 days of age. So piglets get sick often from 3 to 20 days of age. 1, the ground bedding (insulation, keep dry) Newborn piglets require temperatures not lower than 30°C, while delivery rooms are generally controlled at 18°C-20°C. The higher the humidity in the pig house and the colder the pig, can easily cause pig skin diseases, respiratory diseases, infectious diseases and parasitic diseases. Through the hard pad, change the hay frequently, keep the pig's bed clean and dry, provide the pig with a comfortable living environment to promote the growth and health of the finishing pigs in winter. Suspend the 150W-250W infrared light bulb insulation at the top, and the bulb is 40cm-50cm away from the bedtop. As the piglet grows, raise the distance between the bulb and the bedtop. 2, increase the breeding density With high stocking density, each pig's floor space is reduced, and when lying down, it can be warmly affixed to each other. At the same time, when the pigs are kept at high density, their body heat dissipation is also increased, which is conducive to maintaining the temperature inside the pig house. 3, increase the number of feeding Increase the number of feeds to increase the intake of piglets to compensate for the weight loss caused by the body's fat and muscle metabolic heat production caused by low temperatures. Feeding farms can be fed once a night at a time. In the original breeding level increased by about 10%. 4, anti-biting The lack of green feed in winter can easily lead to malnutrition, and "evil warts" are more likely to appear in winter. Therefore, it is necessary to replenish a variety of vitamins, minerals, and trace elements in the feed, and to separate them into strong and weak groups. 5, prevent chaos feeding Adhere to stable feeding quality, stable feeding time, ingredients should be based on different production performance, different growth stages, avoid sudden changes in feed. The feed structure should be slowly and slowly changed. When feeding in the winter season, it is best to mix raw feeds with dry foods. When mixing with a small amount of water, the water temperature should be around 25°C. Do not allow pigs to drink ice water. Never wash your pigpen with water. 6, eat good colostrum The milk secreted by sows after 1-3 days postpartum is colostrum. Colostrum contains more immunoglobulin and magnesium salts, which can enhance the immunity of piglets. At the same time, it also has the function of stimulating peristalsis and accelerating fetal discharge. Allowing newborn piglets to eat colostrum is the basis for their survival. Not only can they improve immunity, but they can also adjust the appetite of piglets. Colostrum is an indispensable and indispensable nutrient for piglets. The piglet is usually given colostrum within 2 hours after birth. 7, feeding After 20 days of growing piglets, the demand for food increases, and the sow's lactation peak is on the 21st day. After this period, the sow's capacity supply will be insufficient. Therefore, piglets are trained to feed their diets 7-10 days after they are born, and the piglets are allowed to feed the feed completely by the age of 20 days. You can use bait, molasses, fried soybeans, corn, sorghum, etc. as bait when you begin training. 8, special production Practice has shown that suckling pigs account for more than 80% of all dead pigs during the lactation period due to their frozen, crushed, weakly died and starved to death. The root cause of death is caused by management's negligence and improperness. Therefore, it is necessary to strengthen the feeding and management of post-natal suckling piglets, improve the responsibility of the keeper, and carry out special care duties. In particular, on winter nights, sows are required to stay on duty while giving birth. It is an important measure to reduce the mortality of suckling piglets. 9, iron, selenium The pigs in the newborn pigs have very little iron storage, only 50 milligrams, and they need 7 milligrams per day for growth. There are few milk sweats. If they are not supplemented in time, the piglets will suffer from growth retardation and diarrhoea due to anemia. In addition, selenium is the most deficient element in feeds. Deficiency of selenium can cause white muscle disease. It is necessary to add sodium selenite before delivery in the later period of pregnancy. 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Second, the technical point of raising piglets during lactation in winter
Feeding management of winter suckling piglets