The influence of low temperature in Winter on Pig raising five links should be controlled in Winter

The main results are as follows: 1. The growth temperature of pigs is 32 ℃ for newborn piglets, 20 ℃ for nursery pigs, 15 ℃ for medium pigs and large pigs. Low temperature will affect the growth and weight gain of pigs. when the pig house temperature is below the lower limit of the optimum temperature, the daily gain will be reduced by 17.8g for every 1 ℃ reduction; if the house temperature is below 4 ℃, the weight gain rate will be reduced by 50%, and the feed consumption will be more than doubled. Therefore, the winter pig house should strengthen the warmth, reduce the metabolic consumption of pigs and improve the feeding efficiency.

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2. When the temperature of the pigsty is low and the humidity is high, it will affect the production performance of pigs, especially the piglets. The average weight gain of piglets in pig houses with high relative humidity in winter is about 48% lower than that of the control group, and is prone to diseases such as dysentery and enteritis. The suitable growth humidity for different pigs is 50% 70%, 40% 80 kg, 80%, 110 kg, and 55%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80%, 80% and 80%, respectively. It can prevent the pig house from dampness and keep it dry by ventilating, increasing lighting and spreading warm bedding materials.

3. The temperature of drinking water and feed in winter is closely related to the growth, development and health of pigs. When the temperature of water and feed is 0 ℃, when the temperature of water and feed is raised to the level of 39 ℃, the pig will consume 682-878 kcal of heat, which is equivalent to 0.5-0.75 kg of concentrate feed per day is wasted on maintaining the pig's body temperature. Therefore, it is best to feed warm feed and warm water for piglets and sows in winter, and the water temperature is about 37 ℃.

4. Pigs are most afraid of "piercing wind" and "thief wind" in severe winter, which not only lowers the temperature, but also causes cold, stroke, rheumatism and other diseases in pigs. In winter, the pigsty must block the wind tunnel, hang grass curtains, paste windows, and close the doors and windows strictly to prevent the "thief wind" blowing into the rat holes, cracks, gaps, broken tops, door edges and windows in the circle, thus affecting the normal growth and development of pigs.

5. If the pig house has low temperature, high humidity, poor hygiene and poor ventilation in winter, pigs are prone to disease. Therefore, it is necessary to strengthen the feeding and management, keep the pig house ventilated, clean and dry, and disinfect the pig house regularly, preferably by flame disinfection. At the same time, "five observations" should be achieved, that is, observing form, spirit, feeding, fecal urine and breathing. Once pigs get sick, they should be diagnosed in time and treated in isolation as soon as possible.