1 The maintenance of pig houses in winter and the intrusion of thieves' winds into pig houses to attack pigs will cause colds, pneumonia and other diseases in pigs. Therefore, the piggery should be built on a high-drying, sunny side, and must be plugged to the north, west and east sides before winter. The window hole, timely repair of the roof and the four walls of the gap, the pigs' windows and ventilation holes should be 1.0 to 1.5 meters above the ground in order to maintain a relatively stable temperature.
2 The doors and windows of the pigskin hanging curtains in the pig house can be covered by straw curtains before the winter, or the entire doors and windows can be covered with plastic cloth to keep warm and cold. Outside the northern wall of the pig house, straw is used to form wind barriers or windrows on the northwest to prevent the northwest wind from invading the pig house.
3 Take the plastic shed plastic shed with less investment, high efficiency, easy production and so on. Farmers disperse pigs generally according to the mode of housing, according to local conditions, because of the simplicity, the arches, ridges, umbrellas or single-slope sunny sheds above the sheds. On the south side, an active ventilation window is reserved for temperature adjustment and ventilation. The plastic sheds can be heated and heated to a temperature of 7°C, which is conducive to pig growth and weight gain.
4 Raising the grass bed In the winter, 15 cm thick corn leaves or other hay should be placed on the pig bed, which can absorb moisture, remove moisture and absorb harmful gases, and increase pig bed temperature. It has been proved that 10 cm thick sawdust is placed in the pigsty and the starter is added. After a few days, sawdust starts to ferment. The temperature can reach 35°C and the temperature in the house can be increased. Sawdust washers are good quality fertilizers for crops.
5 Let the pig sleep warmly and dig a 50-cm deep flat earth pit with a layer of soft grass on it. Cover it with straw to allow the piglets to warm up inside; or use a straw shed to stack soft hay on the inside. Drill inside to keep warm.
6 The pig house plus insulation layer The enclosed pig house ceiling is 1.8 to 2.0 meters above the ground, and sawdust and rice hulls are added to the shed. The grass is laid on the ground for the pig to lie down. A vent is left every two days in the ceiling to remove ammonia and moisture from the house.
7 Careful feeding of energy feeds such as sorghum and corn should be made when feeding the pig's diet carefully. The feed is fed after fermentation and it is necessary to drink warm water. The supply of feed should be adequate, around zero every night, plus one night diet to enhance the ability to resist cold and disease and promote rapid growth.
8 Adding Chinese herbal medicines to add traditional Chinese medicines that promote blood stasis, spleen dampness, dispelling wind and dispelling cold can promote pig's rapid fattening, and can also prevent cold and prevent diseases. Prescription can be used Hawthorn, Atractylodes, tangerine peel, betel nut, Shenqu each 10 grams, malt 30 grams, Chuanxiong, licorice, Nepeta, wind, Bairen each 60 grams, 8 grams of wood pass, into the end of the feed with a small amount of feed in the morning, Feed it once a week.
9 Increased Breeding Density In the winter, the number of pigs in the house can be increased by 1/3 to 1/2 as usual, allowing the pigs to warm up to each other's body temperature. Combined with the heat dissipation of the pigs, the temperature can be increased. Pigs entering new pigs should be carried out on dark days. They should be sprayed with the wine or a low concentration of odor and then sprayed on the pigs. The keeper must observe for several hours to prevent the pigs from fighting.
10 The higher the humidity in the piggery is, the more cold the pig feels and the pig's dermatosis, respiratory diseases, infectious diseases and parasitic diseases. In order to prevent moisture and leakage, it is necessary to diligently change the hay and loose soil, let the pigs defecate urine, keep the pigs lying in a clean and dry place, provide pigs with a comfortable living environment, and promote winter fattening pigs. The growth and development of health.

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