It was found in the work that most pig farmers did a good job of preventing cold and keeping warm in newborn piglets and nursery pigs, and neglected the work of keeping pigs cold and warm. The optimum temperature for growing pigs is 12～22°C. In winter, the temperature is low. Pigs are forced to use body fat in order to resist severe cold. Therefore, the weight gain of pigs is reduced, and feed utilization rate is reduced, and the disease resistance of the body is reduced. It is prone to diseases and seriously affects the efficiency of farming. Therefore, it is very important to do a good job of keeping cold insulation in finishing pig houses in winter. Usually, the following methods can be selected:
One, anti-thief wind
In winter, cold wind intrudes into the pig house. Attacking pigs causes pigs' colds and other diseases. Therefore, the room where the pig house leaks is blocked before entering the winter to prevent cold wind from entering. The windows and ventilation holes of the pig house should be more than 1 meter from the ground. .
Second, pad hay
When the piglet is transferred from the nursery to a finishing house or a newly purchased piglet, some straw and soft straw should be added to the finishing house to reduce the stress caused by the changes in the temperature during the transfer, and to absorb moisture and remove moisture. Absorb harmful gas and other effects. Pay attention to changing the ground, avoid moisture, mildew rotten produce ammonia, harm the health of pigs.
Third, increase the appropriate breeding density
In winter, the temperature is relatively low, and the stocking density can be appropriately increased. Generally, the stocking density is increased by about 30% compared with the summer. The quantity of heat emitted by the pigs increases, and naturally the temperature can be increased. At the same time, the pigs can sleep and warm each other. Whole pighouse temperature.
Fourth, add energy feed
When formulating a pig's diet, the ratio of vegetable oil, corn and other energy feeds should be appropriately increased, and warm water should be consumed. And appropriate amount of vitamins, amino acids, etc. that have anti-stress and anti-oxidant abilities. The feed supply is adequate, the number of feedings is increased during the day, and the pig food must be dried in order to enhance the resistance to cold and disease, and to promote rapid weight gain.
V. Keep pigs dry
Drying pigs is one of the main measures to ensure pig health. In order to prevent pig house from dampness, we should do the following: First, prevent leakage and snow leakage; Second, we must constantly change the bedding; Third, we must timely clean the pig manure, using dry excrement method; Fourth, make the pig house ground outside the surface When the humidity of the piggery is relatively large, moisture can be absorbed by adsorbents such as grass ash, coal ash slag, quick lime, and charcoal.
Six, pay attention to ventilation
Keep the ventilation of the piggery at the same time. If the concentration of harmful gas in the pig house is too high, the ability of the pig to resist disease and keep the cold will be significantly reduced. Therefore, every day at noon, it is necessary to open doors and windows for ventilation, remove harmful gases, and exchange fresh air to facilitate the growth and development of pigs. Because of the low temperature in winter, the ventilation of the pig house must be controlled for ventilation, and the wind speed in the pig house must not be too high.
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