In winter, the climate is dry, changeable, the temperature is low, and there is a large temperature difference between day and night. Pigs' digestive diseases, respiratory diseases, and infectious diseases are prone to occur. Therefore, we must strengthen feeding and management and disease prevention to ensure the healthy growth of pigs and obtain good economic benefits.
First, keep warm
The suitable temperature for pig growth is 14°C-23°C, and the temperature for normal growth of the pig is above 8°C. The northern winter temperatures are mostly below 0°C. Therefore, in order to ensure the normal growth and development of pigs, the best way is to adopt a warm greenhouse. In the winter, if the pig house is to be inspected, the doors and windows of the pig house can be covered with straw drapes or the entire door and window can be covered with plastic sheeting, and the doors and windows can be sealed to keep warm and cold, and the gaps in the pig house can be plugged. The vent hole can be left on the roof of the house to prevent it. The thief winds attack.
The temperature of the nursing house should be kept above 20°C. Within 13 days after birth, the piglets should be returned to the incubator and placed in a warm place after each feeding. Other pigs' beds were covered with hay, straw and other litter. Appropriately increase the breeding density of winter herds, the number of pigs in the house can be increased by 1/3 than usual, and the temperature of the pig house can also be increased indirectly, but the corresponding feeding and management measures must keep up.
Second, ventilation
In winter, the pigs are kept at high density, the pighouses are closed tightly, and the air in the houses is poor, so that the probability of occurrence of respiratory diseases in pigs is greatly increased, resulting in a decrease in feed rewards. Therefore, ventilation in winter pigs is extremely important. Ventilation time is best selected at midday when the temperature is warm. At this time, open the skylight exhaust and discharge the harmful gases such as moisture and cloudiness in the house so that the temperature in the housing will not be lowered too low and the stress on the pig will be reduced. . Ventilation should pay attention to restraint, sunny, warm days and more ventilation, cloudy, cold days, hazy days less ventilation, ventilation and insulation to achieve coordination.
Third, adjust the feed
Winter pigs increase energy metabolism in order to maintain body temperature, and about 1/3 of the food is used to maintain basal metabolism, so the pigs grow slowly in winter. Therefore, proper change of feed structure is also an easy, cost-effective and effective method, which can not only meet the growth needs of pigs, but also obtain greater economic benefits. The energy feed can be increased by about 10% based on the original feed energy level. The big pigs are low and the pigs are high. Piglets can be supplemented with high-energy feeds for fats and oils. Large pigs can increase the proportion of common energy feeds such as corn in the mix, and can also use high-quality, full-price, high-energy feeds. In addition, you can add spleen dampness, cold wind and cold Chinese medicine in the feed, both to promote the pig fast fattening, but also cold resistance. For example, use 10 grams of hawthorn, herb, orange peel, betel nut, and divine song, 30 grams of malt, 60 grams of Chuanxiong, licorice, Nepeta, windproof, Bairen and 8 grams of wood, and feed it in the feed in the morning. End, fed once a week.
Fourth, disease prevention
After entering the winter, a variety of infectious diseases such as swine fever, circovirus disease, infectious gastroenteritis, and contagious pleuropneumonia are easily induced by temperature changes. Therefore, it is imperative to do a good job of immunization against pig diseases and standardize the immunization procedures so as to ensure that the herds have adequate immunity. At the same time, the isolation work of pig farms must be strengthened, and outsiders should be prohibited from entering and exiting indiscriminately, and disinfection should be strengthened. All kinds of utensils should be regularly disinfected in accordance with the disinfection procedures. Disinfectants should also be used interchangeably to obtain good disinfection effects. Adhere to the principle of self-cultivation and self-support and all-in and all-out, try to ensure that the difference in the age of the pigs in the same pig house does not exceed two weeks in order to reduce the spread of the disease. For the diseased pigs, isolation and treatment should be carried out in time to avoid the expansion of the disease and cause serious losses.
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