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Improvement methods for raising pigs in winter greenhouses
Plastic greenhouses are commonly used by farmers to raise pigs. Their advantages are less investment, which can not only keep warm but also block winds. However, if they are used improperly, they will not achieve the desired results. Many pig farmers have caused problems because of improper use of plastic greenhouses. 1. Common problems in plastic greenhouses 1. Large temperature difference between day and night: Compared with closed pig houses, the insulation performance of plastic greenhouses is much worse, especially in winter evening, the temperature will drop to very low, making the temperature difference between day and night quite large, and the weight is small. The pigs are often unable to withstand such a large temperature difference and the onset of disease. Although the pigs with large body weight do not show pathological conditions, the growth rate is significantly slowed and the feed utilization rate is significantly reduced. 2. Humidity: This is because the plastic sheet is impervious. When the seal is sealed at night, the water vapor inside the home cannot be discharged. When the weather is cold, a layer of ice or frost will be formed on the roof, and when the second temperature rises, The ice or frost is once again converted into water and dropped onto the ground of the pig house. This way, the house is always wet. Second, the response measures 1, when the temperature is low, covered with straw: This is a reference greenhouse cultivation practices, during the day by the sun to warm, to the evening, covered with plastic straw cloth, greatly increasing the insulation performance. Here, we have also encountered some problems, that is, the pig house has been built, and the above structure can not be on the people, it can not be solved every day to uncover the straw. To solve this problem, the following method can solve this problem: it is to install a series of fixed pulleys on the roof to fix the pulleys and the roof, and the height of the pulleys is higher than the rolled straw screen so that people can uncover them every day. Grass blinds. Please see the following diagram: 2. Ventilation holes: Leave a hole for ventilation in the greenhouse. This hole is best left on the roof. Leave about ten centimeters between the eaves and scaffolds. It can be ventilated and can be ventilated, but it can still be ventilated when the straw curtain is laid down at night, but the insulation performance is still very good because the top is still covered with straw curtains. If you encounter windy weather, you can also put a part of the grass curtain down during the day to cover the vents. If you look at this picture, you can put some straw curtains in this area and you can block the wind. 3, set up drainage ditch, easy to remove the sewage; slope increase, to facilitate the flow of water to the outside; this is the situation of the drainage ditch, if in the side of the pig house, install a large barrel, install a rough pipe below, need to gully, put When the water pipe is opened, the water in the gutter is quickly washed away, and the sewage in the gutter is quickly washed away. This is very practical for the greenhouse with convenient water supply and drainage. The above is fixed on the wall or a large bucket with iron frame, leaving a rough water pipe below. The easiest way is to use a petrol can and weld an iron pipe on it. Put a soft water pipe on the pipe and lift it normally. Rinse once a day, the air in the home will be much cleaner. 4, double plastic film, frost in the upper layer, but when the leakage is caught with the lower layer, will not be everywhere dripping. In addition, adding a layer of film will also increase the insulation performance, and it will have a once and forever effect on the pig houses that are not convenient to use the straw curtain. The inner layer of plastic sheeting is small because of the small wind inside, and it does not need to be too strong. It is possible to use iron pipes or bamboo baskets as scaffolds, so the cost is not high. If there is no moisture in the pigsty, excessive ventilation is not needed; because the space in the plastic greenhouse is large enough, there will be no air shortage. 5, aisle sprinkle white ash, you can absorb moisture, but also played a role in disinfection. Why don't you throw ash in the circle? Because in the circle, the white ash will burn the pig's skin. We used to burn the pig's skin red, and people don't want to sell it. 6, the shed inside the stove This is a good way to solve the low temperature and humidity, the deficiencies are to increase the cost; and the installation of stoves in the greenhouse, will result in a decline in air quality, especially to prevent gas poisoning. Because the greenhouse is closed more tightly, there is no way to get gas.