來源：http://www.king4arab.com/ 日期：2020-11-24 發布人：sanwa8
1、 Afraid of the cold.
The suitable temperature for growing pigs was 32-35 ℃ for newborn piglets, 20-22 ℃ for nursery pigs, and 15-20 ℃ for medium and large pigs. When the temperature of pig house was lower than the lower limit of suitable temperature, the daily gain decreased by 17.8 g for every 1 ℃ decrease; if the temperature dropped below 4 ℃, the speed of weight gain decreased by 50%, and the feed consumption increased by more than 1 times. Therefore, it is necessary to keep warm in winter, reduce metabolism consumption and improve feeding efficiency.
2、 Afraid of the tide.
When the environment temperature is low and the relative humidity is high, it will seriously affect the production performance of pigs, especially for piglets. The average weight gain of piglets in the pig house with high relative humidity in winter was about 48% lower than that of the control group, and the piglets were prone to diarrhea, enteritis and other diseases. Suitable for different growth humidity of piglets, 50% - 70% for piglets, 70% for 40-80 kg fattening pigs, 80% for 80-110 kg fattening pigs and 55% - 80% for breeding sows. The room can be kept dry by ventilation, increasing light and laying warm cushion.
3、 Afraid of cold.
The temperature of drinking water and feed is closely related to the growth and health of pigs in winter. When the water temperature and feed temperature are 0 ℃, raising the water and feed temperature to 39 ℃, the pig will consume 682-878 kcal of heat energy, which is equivalent to 0.5-0.75 kg of concentrate per day in vain to maintain body temperature. Therefore, it is better to feed warm feed and warm water for piglets and sows in winter, and the water temperature should be kept at 37 ℃.
4、 Afraid of the wind.
Pigs are most afraid of "draught" and "thief wind" in severe winter, which will not only reduce the temperature of the house, but also cause cold, stroke, rheumatism and other diseases. In winter, the wind tunnel must be blocked, grass curtain should be hung, windows should be pasted, and doors and windows should be closed tightly to prevent rat holes, cracks, gaps, broken roofs, door edges, window cracks and other "thief wind" blowing in, which will affect the normal growth and development of pigs.
5、 Fear of illness.
If the temperature is low, humidity is high, sanitation is poor and ventilation is not good in winter, pigs are prone to diseases. Therefore, it is necessary to strengthen the feeding management, keep the enclosure ventilated, clean and dry, regularly disinfect the enclosure, and it is better to adopt flame disinfection method. At the same time, it is necessary to observe the "five observations", that is, to observe the morphology, spirit, food intake, feces and urine, and to observe respiration. Once a pig is sick, it should be diagnosed in time and isolated as soon as possible.