Raising pigs need to do five squares, that is, varieties, nutrition, environment, management, and epidemic prevention. These five aspects are indispensable. Among them, the environment, variety, nutrition, and epidemic prevention are called four major technical restrictions, and the impact of environmental pigs is huge. If the environmental control is improper, the production potential cannot be played, but it is also the cause of many diseases. Only by giving the pigs a comfortable living environment can we give full play to its production potential.
The biological characteristics of pigs are: piglets are afraid of cold, big pigs are afraid of heat, and pigs are not moist, and they need clean air. Therefore, the structure and craft design of large -scale pig farm pigs must be considered around these problems. These factors affect each other and restrict each other.
(1) Temperature: Temperatures play a dominant role in the environmental factors. Pigs are very sensitive to the height of the environmental temperature. The low temperature is the most harmful to the piglets. If the piglets are exposed in 1 ° C for 2 hours, they can freeze, frozen, and even frozen to death. Adult pigs can be frozen in an 8 ° C environment for a long time, but they can be frozen without eating or drinking; thin pigs can be frozen when they are at -5 ° C. Cold has a greater indirect impact on piglets. It is the main cause of diarrhea diseases such as piglets and infectious gastroenteritis, and can also stimulate the occurrence of respiratory diseases. The test shows that if the conservation pig lives in an environment below 12 ° C, its weight gain ratio to the control group slows by 4.3 %. The feed remuneration will be reduced by 5 %. In the cold season, the temperature requirements of adult pig houses are not less than 10 ° C; the conservation pig house should be maintained at 18 ° C. The 2-3 weeks of piglets need about 26 ° C; the piglets within 1 week need a 30 ° C environment; the temperature in the conservation box is higher.
The temperature difference between day and night in spring and autumn is large, which can reach less than 10 ° C. Full pigs cannot be adapted and can easily induce various diseases. Therefore, during this period, it is required to close the doors and windows in a timely manner to reduce the temperature difference between day and night. Adult pigs are not heat -resistant. When the temperature is higher than 28 ° C, the big pig with a body of more than 75kg may have asthma phenomenon: if it exceeds 30 ° C, the amount of pig feed decreases significantly, the feed remuneration decreases, and the growth is slow. When the temperature is higher than 35 ° C and does not take any cooling measures for the anti-controlled agency, some fat pigs may occur. Pregnant sows may cause miscarriage, pig sexual desire decreases, poor semen quality, and 2-3 in 2-3 of them. It is difficult to recover within the month. Thermal stress can follow multiple diseases.
The temperature of the pig’s house depends on the source of the calories in the pig house and the degree of losing loss. Under the conditions of no heating equipment, the source of heat mainly depends on the heat of pig body and sunlight. The amount of heat loss is related to factors such as the structure, building materials, ventilation equipment and management of the pig house. In the cold season, heating and insulation facilities should be added for feeding L Da pigs and conservation pigs. In the hot summer, the anti -depression work of adult pigs should be done. If you increase ventilation and cooling, speed up the loss of heat. Reduce the feeding density of pigs in the pig house to reduce the heat source in the house. This item
Work is especially important for pregnancy sows and pigs.
(2) Humidity: Humidity refers to the amount of moisture in the air in the pig house. Generally, it is represented by relative humidity. The sanctuary of the pig’s official is 65%to 80%. The test shows that in the environment of 14-23 ° C, the relative humidity is 50%to 80%of the environment is most suitable for pig survival. Set up ventilation equipment and open doors and windows to reduce the humidity of the room.
(3) ventilation: Due to the large density of pigs, the volume of the pig house is relatively small and closed. The pig house has accumulated a large amount of carbon dioxide, atmosphere, hydrogen sulfide and dust. Closed cold season. If pigs live in this environment for a long time, they can first stimulate the upper respiratory tract mucosa, cause inflammation, and make pigs infection or stimulate respiratory diseases, such as asthma, infectious pleural pneumonia, pig pneumonia, etc. The dirty air can also cause pig’s stress syndrome. It is manifested in decreased appetite, decreased lactation, madness or lethargy, and chewing ears. Ventilation is still an important method for eliminating harmful gases.

Positive pressure ventilation and cooling principle
The host of the positive and ventilated and cooling down is the Eastern Evapable Cold Fin. The principle is to send the natural air outside the livestock and poultry house through the wet curtain filtering and cooling, and continuously send it into the house through its fan and air supply pipeline system. , Harmful gases such as hydrogen sulfide are discharged through open or semi -open doors and windows in the form of positive pressure [such as closed livestock and poultry houses must be supplemented by negative pressure fans] to ensure that there is a clean and clean in the livestock and poultry house. Cool and fresh air environment, reduce the risk of disease infection, weaken thermal impact of heat stimulation on livestock and poultry, and solve the one -time solution of ventilation, cooling, and purification. Positive ventilation and cooling cooling are gradually becoming the first choice for new and transforming pig farms in large -scale pig farms. It is also the first choice for various factories to improve the ventilation and cooling of the workshop.

Core advantage and application of positive pressure ventilation and cooling system
1. Applicable to the open, semi -open and closed environment of the new and old pig farms, the service life of the unit can reach more than 10 years
2. Small investment and power saving, only 1 degree/hour of power per 100 square meters, the air outlet can generally cool down by 4 to 10 ° C, ventilation, cooling, oxygen, and purification solve it at a time
3. The fixed point is to cool down the sow, and at the same time meet the different temperature needs of sows and pigs to effectively prevent piglets and dilute; help sows increase by 40%in high temperature weather
4. Effectively weaken thermal stress, prevent diseases, prevent difficulty in giving birth, improves piglets to achieve the survival rate, significantly improve the quality of boar semen suitable for greenhouses, large sheds, pigs, chickens, cattle and other livestock and poultry houses. It is especially suitable for large -scale pigs. Field delivery house, conservation house, boar bar, fattening house