Wet pigsty will affect the health of pigs. In the process of pig breeding, people often focus on temperature, humidity, feeding density, air quality and so on, while humidity is not included in the category of environment, but ignored by people. So it often leads to a series of problems. For example, piglets in the delivery room are prone to diarrhea in summer, and the transferred pigs have diarrhea or other discomfort, which is mostly related to the humidity in the pen house.

1 Effect of humidity in shed on pigs

The reason why the environment of pigsty is too humid and causes many diseases is directly related to the temperature of pigsty. Generally, excessive humidity in pens has a great influence on suckling piglets, especially in summer, which is easy to cause diarrhea in piglets. The humidity in the delivery room not only refers to the humidity in the air, but also includes the humidity on the ground and in the incubator. If the ground is too wet, it is necessary to absorb the heat in the air during the drying process, which will lead to the decrease of the surrounding environment temperature. Piglets lying on the net bed near the ground are first affected by temperature changes, which will make their bellies catch cold and easily lead to diarrhea. If it is wet in the incubator, it will directly affect the rest of the pig. In summer, the delivery room is humid, although the temperature in the air will not decrease obviously, it will lead to the effective cooling of piglets during the drying process. However, newborn piglets are sensitive to the change of environmental temperature, and their digestive function is not fully developed, which will inevitably lead to the decrease of their digestive function and the weakening of their disease resistance, thus causing diseases. In addition, the environment of pigs changes during the transfer process, such as changing from dry environment to wet environment, which often leads to the inadaptability of pigs. The main reason for this situation is the all-in and all-out feeding mode. After each batch of pigs is transferred, the pigsty should be thoroughly cleaned and disinfected. However, if the turnover of pig farms is tight, a new batch of pigs will be transferred to the pigsty before they are completely dried after disinfection, resulting in wet ground in the pigsty. If the temperature in the pigsty is low at this time, the pigs will be cold, while the temperature is high, which will lead to excessive humidity in the pigsty and affect the new rotation.

Two reasons of damp pigsty.

The root cause of damp pigsty is water. It is too humid in the delivery room, which is related to the hot weather of sows playing with water in summer and the frequent washing of the ground by breeders to cool down. In order to prevent heatstroke and cool down in summer, the most effective way is to spray or rinse to cool down, which will keep the delivery room moist. In winter, the humidity in the shed is too high, and it is closed without heat preservation, which leads to the water vapor in the shed not being discharged. After encountering cold walls, floors and roofs, water will form again, which will also cause the pigsty to be wet all the time. This is a common situation in pig production in cold areas of northern China. In addition, there is a certain relationship between excessive humidity in pigsty and disinfection. Disinfection is an important work in pig production. In order to achieve better disinfection effect, some pig farms will be disinfected many times, so that the pigsty can not be completely dried.

3 Humidity solution

In order to improve the environmental quality of piggery and ensure the health of pigs, besides other environmental factors, we should also pay attention to the humidity problem in piggery and solve the humidity problem from various aspects. For the delivery room, the height of the delivery bed can be appropriately raised to keep the piglets away from the wet ground, so as to reduce the adverse effects of humidity on the piglets, but this is not a long-term solution, and the most effective way is to take corresponding measures to solve the humidity problem in the room.

First of all, we must strengthen the ventilation of the pigsty. Good ventilation can drain excess water vapor from the pigsty. When ventilating, corresponding measures should be taken according to the actual situation of the pigsty. It can increase the area of windows and increase the ventilation inside and outside the house; Ground windows can be set up, and the wind passing through the windows can directly evaporate the water on the ground, thus reducing the tidal temperature in the paddock; Fans can also be installed in the house to promote air circulation. This method can be used after the empty house is cleaned and disinfected, and it can make the house dry quickly for use in advance. Because water is the main cause of the humidity in the shed, it is necessary to control and save water in the production process. Especially in the delivery room and maintenance stage, reduce unnecessary water use and prohibit water use where it should not be used. Timely repair the leaking water pipes at home and pay attention to the daily cleaning work. It is necessary to minimize the phenomenon of water accumulation on the ground. If water is found, dry it in time.

You can sprinkle quicklime and use its moisture absorption characteristics to dry the local air. In addition, quicklime also has the function of disinfection. Although quicklime will dissipate heat in the process of moisture absorption, its heat generated in the process of moisture absorption is very small, which is not enough to have a great impact on the indoor environmental temperature.

If in summer, in order to cool down, it is necessary to use methods that are easy to cause humidity in the shed, such as spraying water, and the humidity problem in the big environment in the shed is not easy to control, then simply controlling the small environment in which piglets live is also an effective method. Piggy's mat can be dried frequently. A few days before the piglet is born, a dry cloth or carpet can be spread on the piglet to prevent the piglet from lying on the wet wooden board, which can prevent the piglet from having diarrhea. In addition, it is necessary to strengthen the sense of responsibility of breeders and take certain punishment measures when necessary. If unreasonable water use or other improper feeding management is found, a fine will be imposed, so that breeders can consciously control water use at work, which can play a very good role in controlling indoor humidity.