With the onset of winter, the external climate has undergone tremendous changes. Cold weather will cause severe cold stress on the pigs. If the management is not strengthened, it will slow the growth rate, or it will affect the pig production. On January 8th, when Dr. Zhou Hongchao of the College of Veterinary Medicine at the Northwest A&F University received technical guidance from several large pig farms in Shangluo, Shaanxi Province, he introduced issues that should be addressed in winter pig production:
1. Renovation of pig houses, open-type pig houses should be built insulation shed. Before the cold winter arrives, the pig house should be completely overhauled and maintained, repairing the damaged housing, walls and ceiling. In northern regions, in order to increase the insulation effect, open-type pig houses should build plastic insulation sheds, block the windows and excess vents, and hang cotton curtains and straw curtains at the entrance to prevent the cold wind from entering to facilitate thermal insulation.
2, to strengthen the control of the home environment, such as strengthening ventilation, reduce indoor humidity, reduce harmful gas production. In order to keep warm in winter, the ventilation intensity is often reduced and the humidity inside the house is too high, as well as excessive harmful gas stagnation. Excessively high indoor humidity and excessive harmful gases can cause respiratory disease and other diseases in pigs. Therefore, it is necessary to frequently clean the house waste, maintain a good hygienic environment, reduce the humidity in the house, and reduce the harmful effects caused by the accumulation of faeces. Gas concentration.
3, increase the temperature inside the house, to create a warm and comfortable living environment for pigs. The cold outside in winter has also brought down the temperature in the house. The low temperature has brought cold stress to the pigs. The cold stress will reduce the health of the pigs and cause some diseases, especially for piglets. The impact is even greater, and the cold environment will increase the diarrhea of ​​the piglets, which will lead to increased mortality of piglets. In addition, in the cold environment, the pigs will increase the feed intake to increase the body's metabolic heat production to maintain body temperature. The increase in feed intake and the decrease in daily gain will increase the breeding cost and reduce the breeding efficiency. Therefore, artificially increasing Sherwin is very important. There are many ways to increase temperature, such as using hot blast stoves, coal stoves, heating and other equipment to provide heat sources to increase the temperature; it is also possible to increase the stocking density appropriately, and to increase the temperature of herds by the distribution of herd's own temperature. For fattening pigs) For newborn piglets, heating equipment should be used to keep the temperature of the delivery room at 22-25°C. At the same time, piglet electric heating plates, infrared light bulbs and other heating equipment should be used to provide heat for the piglet nursery box so that the piglets have a warm and dry survival. The environment reduces the incidence of diarrhea and other diseases caused by low temperatures (incubator temperature should be maintained within the range of 33-35°C).
4. Feed the nutritious and high-quality feeds during the day to improve feeding methods and promote digestion and absorption of the pigs. Icy feed has a greater impact on the herd during the winter season. Try to feed dry powder as much as possible.
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