The winter temperature is low and the air is humid, and the temperature difference between day and night varies greatly. Therefore, the work of raising pigs in winter should be carried out around the problem of protecting against cold and moisture. The following eight essentials are mastered to improve the efficiency of pig raising.
First, the wind and winter cold wind invaded the pig house, attacking the pig body will cause pigs to catch colds and pneumonia and other diseases. Therefore, the pig house should be built in the high ground, sitting north facing south, sunny place; in order to keep the temperature relatively stable, The window and ventilation hole of the pig house should be more than 1 meter away from the ground. Before entering the winter, use wooden boards, straw curtains or plastic film to block the leaking place of the pig house to prevent the cold wind from invading. At night, hang the curtain in front of the pig house to Keep warm and keep cold; put corn stalks or set windproof walls in the northwest direction outside the north wall of the pig house to prevent the northwest wind from invading the pig house.
Second, increase the stocking density to breed the pigs in separate breeding, increase the stocking density, the winter is generally about 40% higher than the summer stocking density, the fattening pig is about 1-1.5 square meters / head, empty pregnant, pregnant sows each 2 square meters, The lactating sows are 4 square meters per head and the breeding piglets are 0.4 square meters per head. The increase in calories from the pigs naturally increases the temperature of the house, while the pigs are sleeping next to each other, which can both warm each other and increase the temperature of the entire house. The optimum temperature for fattening pigs is: 16 to 22 ° C before weight 60 kg; 14 to 20 ° C for 60 to 90 kg; 12 to 16 ° C for 90 kg or more.
3. Adding energy feeds When formulating pig diets, the proportion of energy feed should be increased appropriately. Wheat can be used instead of corn. Compared with corn, wheat has higher protein and carbohydrate content and lower fat content. Because wheat contains high non-starch polysaccharides, it is necessary to add xylan-based compound enzyme preparations, such as Jiuding's new wheat-type full-price formula enzyme preparation-M100, to increase the effective energy value of wheat and improve wheat type. The digestibility of the formula at full price. Or use the high-quality full-price feed of regular manufacturers, drink warm water.
Fourth, do a good job of winter health In winter, in order to keep warm, often air quality can not be guaranteed, respiratory diseases have become one of the number one killer on the farm. Prevention of respiratory diseases is the key to winter health care. Pregnant sows add “lung An Changkang†at 1.5 kg/ton, piglets use “Jiuding 20% ​​tilmicosin premix†8 mg/kg, and fattening pigs add “Dingzhu†Kang" 1.5 kg / ton + Tai Miao net 0.15-0.2 kg / ton +15% chlortetracycline 2 kg.
5. The artificial method of setting the heat source in the pig house, setting the heat source in the pig house to increase the temperature inside the pig house, using the hot air stove, the heater, the coal stove and other equipment to provide heat source, heating the piglet with the piglet electric heating plate, infrared bulb, etc. The equipment provides an additional source of heat for the piglet incubator.
6. Exclusion of harmful gases The concentration of harmful gases in pig houses is too high, and the ability of pigs to resist disease and keep out cold will be significantly reduced. Therefore, use the noon high temperature every day to open the doors and windows for ventilation. Because the temperature in winter is low, the ventilation of the pig house must control the ventilation. The wind speed in the pig house is not more than 0.2 m/s. The temperature should be raised before ventilation.
Seven, more sun exposure Choose the warm and sunny weather 1 to 3 o'clock in the afternoon, the boar pigs are rushed outside to sun, appropriate outdoor sports, improve the resistance of pigs to cold weather and semen quality.
8. Keep the pig house dry. The relative humidity in the house is preferably 50% to 75%. In order to prevent the pig house from being wet, it should be "six essentials": one must prevent rain leakage and snow leakage; the second should be diligently exchanged for hay and loose soil; the third should train pigs to urinate and urinate; the fourth is to make the pig house high on the ground. For the exodus, it is best to use three soils to prevent moisture return; five to regularly remove pig manure and pig urine to eliminate the moist roots of the pig house; six to use the adsorbent to absorb moisture, when the pig house is humid, the grass ash and coal ash can be used. Adsorbents such as slag, quicklime, and charcoal absorb moisture.
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