The health level of pigs is closely related to the air quality of the pig house and the environment of the pig house. Harmful gases, dust, and microbial pathogens in the air can all affect the occurrence and spread of animal diseases. Therefore, it is of utmost importance to improve the air quality in the pig house and do a good job in the environmental control of the pig house.
First, the piggery should be well ventilated. In order to maintain a good air quality in the pig house, it is necessary to maintain a proper amount of ventilation and timely remove the manure from the faecal board. It is best to clean the dung in the morning and in the afternoon. It is strictly forbidden to use water to clean the barn. The piggery using the fecal board cleaning process should regularly scrape the excrement once every 4 to 6 hours, and the piggery using the blisters process should adjust the ventilation of the excrement duct fan according to the temperature change. Keep good air inside the pig house. When the outside temperature reaches the temperature season of 10°C to 25°C, natural ventilation can be used to improve air quality. When the winter temperature is low, it is necessary to use a ditch fan for ventilation. In sunny winter, when the outside temperature is higher than 10°C, the windows must be opened in time for natural ventilation. However, it should be avoided that the wind blows directly to the pigs to prevent the pigs from catching colds.
Followed by the temperature inside the pig house, excessively low temperatures all affect pig feed consumption and weight gain. The appropriate temperature range for pig rearing depends on a variety of factors such as the pig's breed, age, physiological stage, and feeding conditions. For example, the temperature of a newborn piglet should be controlled at 32°C-35°C during one week, then 2°C every week, the temperature of the nursery is controlled at 22°C-27°C, the temperature of the finishing pigsty is maintained at 17°C-20°C, and the temperature of the delivery room cannot be maintained. More than 25 °C.
The third is the humidity in the pens, the humidity is high, and the disease resistance of the pigs is weakened, which is conducive to the growth and reproduction of pathogenic microorganisms, and the pigs are susceptible to delirium, eczema and respiratory diseases. When the relative humidity increased from 45% to 95%, the pig's daily gain decreased by 6% to 8%. In the temperature of 11 °C ~ 23 °C, relative humidity 50% ~ 80%, the best fattening effect on pigs.
The fourth is the harmful gas in the sheds. The hazards of harmful gases in the pens are excessively related to the digestion of the intestines. We often trouble the odors and harmful gases in the pig houses, especially in the case of confined in winter. more serious. The harmful gas in piggery, including ammonia, hydrogen sulfide, etc., is not only unpleasant, but also very irritating. It is highly corrosive to pig's eyes and respiratory mucosa. Pigs living in this environment have a much higher chance of developing respiratory diseases. However, due to low winter temperatures, ventilation measures have been neglected by farmers. However, we must make proper ventilation to ensure fresh air. Do not irritate the nose so as not to stimulate the respiratory tract to induce respiratory tract inflammation and reduce the pig's resistance. Ventilation and ventilation should be arranged when the pigs are most active in eating and eating. Normally, the timing fan is switched on and off.
The fifth is the captive density, and the raising of the breeding density can make full use of the available space and reduce the cost of raising pigs. Reducing the density and ensuring the space needed for pig growth and development can reduce the amount of feed intake, and can reduce the calamity caused by the narrow space, such as the problems of excrement, urination and tail biting. Therefore, we must reasonably control the stocking density. The age difference of piglets weaned in the same batch should not exceed one week, preferably a nest, so as not to reduce the mutual infection among piglets with different immune status, and raise the floor density to 0.5 square meters when raising to about 20-25 kg. Head, strip ground by 0.3 square meters/head. The fattening farms should not be too large, and should be 15-20 heads/column. According to the climate, the conditions of the housing should be 0.8 square meters/head for pigs and 0.8-1.2 square meters/head for pigs.
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