Autumn and winter mating sows to be pregnant, winter and spring is the production period, and at this time the normal cold ice and snow weather, have a greater impact on the growth and development of piglets. Therefore, to obtain the economic benefits of raising pigs throughout the year, it is crucial to grasp the quality of feeding and management of winter-spring piglets. 1, heat and ventilation coexist. The temperature of the heat preservation zone of the newborn piglet was maintained at 32-35°C. After 1 week of age, the piglets began to reduce the temperature in the holding zone and thereafter decreased by 2 to 3°C per week and fell to about 22°C by the age of 2 months. In particular, attention should be paid to controlling the ambient temperature from the time of birth to 2 weeks of age. Because the ability of the piglets to regulate body temperature is poor during this time, many pig farmers often only pay attention to insulation and neglect ventilation, which is unfavorable to the health of the piglets. Ventilation is required in order to eliminate the humidity, odor, and heat dissipation of the pigs. 2, artificial help so that piglets eat colostrum early. Before the delivery, the management personnel should fully understand the temperature of the delivery room and prevent the newborn pigs from getting cold. An incubator can be set. The temperature in the cabinet should be adjusted to about 33°C. After the piglet is born, it is necessary to immediately remove the mucous membranes and oral mucous membrane so that the piglet can breathe freely. After birth, the piglet is wiped dry and put into the heat preservation area to help the piglet suck the colostrum. Piglets have the habit of fixing nipples, and manual assistance in fixing the teats is one of the measures for the piglets to be fully active. In the case of a difficult or short delivery of sows, midwifery will be given to help reduce stillbirths and prevent crushing of piglets. After the piglet is removed from the birth canal, the umbilical cord will become a passage for bacteria to invade the newborn piglet. If the piglet is not handled properly, it will cause bacterial infection. To prevent infection, cut the umbilical cord and disinfect it with 2% iodine. If umbilical bleeding occurs, use a wire to tighten the umbilical cord. At the same time, the mucus was wiped off immediately, and after the umbilical cord was disinfected, the piglet was helped to eat colostrum as soon as possible. Colostrum is rich in nutrients and immune antibodies and has a special physiological effect on newborn piglets. 3, good nursery and nesting. When a sow produces difficult lactation at the time of childbirth, or if there is a shortage of lactation, or if there are more than 12 heads of a litter of piglets, foster or rearing the litter. The foster care is carried out within two days after delivery, and is applied to foster piglets (or sow urine in piglets) with the sow’s postpartum tire coat and mucous membranes, while wiping some iodine on the sow’s nose and piglets. Sows can not distinguish between self-produced and sent to pigs. To prevent the piglets from biting or biting the sow's nipple when fighting, the two pairs of canine teeth and two pairs of teeth can be cut off at birth, but be careful not to cut the teeth. Usually ends on the first day of birth to stop each other from biting. Generally use a scalpel to cut off or cut the color with the sharp scissors to the last three tail vertebrae, and apply drugs to prevent infection. 4, carefully do a good job of artificially assisted fixed nipples. Piglets have the habit of eating fixed nipples. In order to make the whole litter of piglets grow and develop uniformly and improve the survival rate, manual assisted fixation of teats is a meticulous task in 2 to 3 days after the birth of the piglets. Choose as the mainstay, supplemented by manual control, especially to control strong piglets that are good enough to grab the tits. Usually you can set it aside until the other piglets have found a good nipple. When the sow puts milk, the league immediately puts it on the designated I have milk on my nipples. In this way, each time when feeding, they insist on artificial auxiliary fixation, about after 3 to 4 days to establish the position of feeding, fixed nipples feeding. 5, to prevent piglets anemia. At the age of 3 to 4 days, 100 to 150 mg of iron preparation (iron dextran) is injected to prevent anemia in piglets. Iron preparations should not be injected into the legs and should be injected into the neck. 6. Feed the starter in time. After the piglets are 3 days old, the piglets can be fed and trained to prepare for weaning. Lysine in dietary materials 1. 25 ~ 1.5, crude protein content of 20% to 22%. The purpose of supplying foodstuffs is to stimulate the digestive tract of piglets to tolerate solid diets, produce immune tolerance, and reduce diarrhea after weaning. The piglets are castrated 2 to 3 weeks after the growth of the piglets. The most suitable time is 7 to 14 days of age, using clean, sharp surgical blades. Surgical site disinfection using disinfectants. 7. Implement scientific weaning. The suitable weaning time for piglets can be determined according to the specific conditions of the pig. Large-scale pig farms have generally adopted early weaning measures and breastfeeding takes 28 to 35 days. In general, it is best not to produce weaning earlier than 21 to 28 days of age, so as to avoid additional difficulties in breeding piglets and affect the survival rate of piglets. The weight of weaned piglets should generally be greater than 5.5 kg, but the cumulative feed intake during lactation should be taken into consideration. The cumulative feed intake per head should not be less than 1 kg. When the milking time is allowed to be more than 2 to 3 days, the larger one in each litter should first be weaned. The ambient temperature is maintained between 27 and 30°C. Weaned piglets are bred in groups depending on their size. Every 4 to 5 piglets are provided with a feed chute, and a waterer is provided for every 20 to 25 piglets. The weaned piglets are in a strong stage of growth and development, and the tissues and organs need further development. The function still needs to be further improved, especially the digestive organs are more prominent. Pig milk is easily digested and absorbed by piglets, and its digestibility can be as high as 100%. The nutrients needed after weaning are entirely derived from feed. The main energy source of milk fat is replaced by cereal starch, and casein, which can be completely digested and absorbed, becomes a vegetable protein with a low digestibility, and the feed contains a certain amount of crude fiber. When the ulcerated piglet feeds on more feed, the protein and minerals in it are easily combined with the free hydrochloric acid in the stomach of the piglet, which can not fully inhibit the propagation of E. coli in the digestive tract and often cause diarrheal diseases. 8, a reasonable transition feed. During weaning, piglets should be fed as early as possible to promote the fastest growth. The quality of piglets is high, ranging from 1.1% to 1.25 lysine, and 18% to 20% crude protein. In order to make the weaned pig as soon as possible adapt to the feed after weaning, the transition of the feed for the piglet and the transition of the feeding method should be made. Within 2 weeks of weaning, piglets should keep their beverages unchanged (still feeding lactation-subsidized feed), and add appropriate amounts of antibiotics, vitamins and amino acids to relieve stress. After 2 weeks, they gradually transition to feed for weaned piglets; 3 to 5 days of the best limited feeding, the average daily intake of 160 grams, 5 days after the free intake. 9, do a good job prevention in advance. Piglets are susceptible to various diseases such as piglets jaundice, white piglets, infectious gastroenteritis, paratyphoid fever, and E. coli dysentery. Mortality is high, and winter cold piglets are also prone to cold stress diarrhea. To deal with these diseases, in addition to the previously mentioned attention to insulation and moisture, but also to maintain a good environmental health and air quality. Should be regularly disinfected, excrement is cleaned immediately, keeping drinking water clean and ventilating and ventilating. It is also prevented by injecting the vaccine in advance and feeding the corresponding antibacterial agent.
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