1. Overhaul the pig house in advance. In winter, cold winds intruded into the pig house. Attacks on pigs caused pig colds and pneumonia. Therefore, the piggery should be built on a high dry terrain, facing north and facing the sun. To keep the temperature relatively stable, the windows and ventilation holes of the pig house should be more than 1 meter from the ground; use wood, straw or plastic before winter Membrane and other places to block the piggery blocking the air, to prevent the intrusion of cold wind; at night in the pighouse curtains to keep warm and cold.
2. Grazing or sawdust in a pig bed. In winter, soft hay, soft straw, or about 10 centimeters of sawdust with a thickness of about 20 centimeters should be added to the pig bed, which can play a role in absorbing moisture, removing moisture, absorbing harmful gases, and increasing pig bed temperature. Pay attention to changing the bedding and sawdust to prevent moisture and mildew from producing ammonia gas.
3. Increase the stocking density appropriately. The dispersed pigs were reared in groups to increase the stocking density. In winter, the stocking density generally increases by about 40% over summer.
4. Add energy feed and carefully feed. In pig diets, the proportion of energy feeds such as corn and sorghum should be appropriately increased, or full-price feeds of regular manufacturers should be used to drink warm water. The feed supply was sufficient. During the day, the number of feedings was increased. Feeding of a meal was maintained at around zero at night, and the pig food was dried to enhance cold resistance and disease resistance.
5. Add chills and cold-dispelling herbs to the feed. The addition of Chinese herbal medicine to remove cold, promote blood stasis, and invigorate spleen and dampness in feed can not only promote rapid fattening of pigs, but also prevent cold and prevent diseases. The prescriptions are as follows: Hawthorn, Divine Comedy, Rhizoma Chuanxiong, Poria, Nepeta, Wind Resistant, Gorgonine, Alfalfa, Bupleurum, Atractylodes, Areca, Licorice each weighing 20 grams, 30 grams of fried malt, and the amount of 0.2% to 0.5% at the end of the study. Feed twice a week.
6. Set the heat source in the pig house. Hot air heaters, heaters, coal stoves and other equipment can be used to provide heat sources, and heating equipment such as piglet hot plates and infrared light bulbs for suckling pigs provide additional heat sources for the piglet incubator. In the use of coal-fired heating equipment, attention should be paid to the smoothness of the flue gas, to avoid carbon monoxide trapping and to cause poisoning in pigs, and to prevent fire.
7. Remove harmful gases. Daily use of noon high temperature period, open the doors and windows ventilation, remove harmful gases, exchange fresh air, in order to facilitate the growth of pigs. In winter, the air temperature is low, ventilation must be controlled in the ventilation of the pig house, and the wind speed in the pig house should not exceed 0.2 m/s, and the temperature should be increased before ventilation.
8. Sunlight. Select 13 to 15 o'clock in sunny weather to allow the pig to bask in the sun and properly strengthen outdoor activities to improve the pig's resistance to cold weather.
9. Dig warm nests in the pig house. Dig a half-meter-thick flat earth pit in the pig house, cover the soft grass with straw on top to allow the piglets to warm in, or build a grass shed in the pig house and put some soft hay in it to allow the pig to drill. Sleep inside.
10. Keep the pig house dry. The dangers of wetness in pig houses: First, the higher the humidity in the pig house, the colder the pigs feel, the colder the pigs get together, resulting in crushing and even death; the second is beneficial to the growth of bacteria, which can easily cause epidemics. There are skin diseases, respiratory diseases, infectious diseases and parasitic diseases. Therefore, pig house drying is one of the main measures to ensure the health of pigs. In order to prevent dampness in the pig house, we must do “six thingsâ€. First, prevent leakage and snow leakage; Second, work hard to change hay and loose soil; Third, train the pigs only to defecate and urinate regularly; Fourth, make the floor of the pig house higher than the surface, preferably use three-soil to prevent flooding. Fifth, we must regularly remove pig manure, pig urine, remove the dampness of the pig house; Sixth, absorb moisture with the adsorbent, when the pighouse humidity is large, available plant ash, coal ash slag, quicklime, charcoal and other adsorbents absorb moisture.
11. Add insulation on and around the pig house. Generally closed pig house ceiling height 1.8 to 2.0 meters above the ground, can be added to the shed or sawdust insulation. On the back wall, gables and front wall of the pig house, insulation facilities should be added during the winter season. The commonly used methods are: stacking crop stalks; temporarily building mud adobe, thickening the surrounding four walls, and setting up plastic film on the sheds.
12. Increase the lighting area of ​​the pig house. When the pig house is built, it is necessary to consider the lighting area of ​​the pig house. The open-type pig house should have a large open area in order to prepare the winter covered plastic film for easy lighting. Closed pig houses are to be reserved in the south wall and the roof to prepare for the installation of glass in winter.
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