1、 Afraid of the cold.

猪的适宜生长温度，初生仔猪32～35℃，保育猪20～22℃，中猪和大猪15～20℃。低温对猪生长增重影响较为严重，当猪舍温度低于适宜温度的下，每降低1℃，日增重减少17.8克；如果舍温下降4℃以下，增重速度下降50%，增加饲料消耗量1倍以上。因此，冬季猪舍应加强保暖，减少猪体代谢消耗，提高饲养效益。

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.

二、怕潮。

2、 Afraid of the tide.

当舍内环境温度较低时，相对湿度大，会严重影响猪的生产性能，特别对仔猪危害更大。冬季相对湿度高的猪舍内的仔猪，平均增重比对照组低48%左右，且易发生下痢、肠炎等疾病。适宜不同猪的生长湿度，仔猪50%～70%、40～80公斤的育肥猪70%、80～110公斤的育肥猪为80%、繁殖母猪 55%～80%。可通过通风、增加光照、增铺保暖垫料等防止舍内潮湿，保持干燥。

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.

三、怕凉。

3、 Afraid of cold.

冬季猪的饮水和饲料的温度对猪的生长发育和健康有密切的关系。当水温、料温0℃时，把这些水、料温升高到体温39℃的水平，猪体就要消耗 682～878千卡的热能，也就等于每天0.5～0.75公斤的精饲料就白白地消耗在维持体温上。因此，在冬季饲养仔猪和母猪，更好喂温料和温水，水温保持在37℃左右。

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 ℃.

四、怕风。

4、 Afraid of the wind.

猪在严冬更怕“穿堂风”和“贼风”，不仅会降低舍温，更易引起猪感冒、中风、风湿等疾病。冬季的猪舍必须堵风洞、挂草帘、糊窗口，关严门窗，防止圈内的鼠洞、裂缝、缺口、破顶、门边、窗缝等“贼风”吹入，影响猪正常生长发育。

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.

五、怕病。

5、 Fear of illness.

如果冬季猪舍温度低、湿度大、卫生差、通风不好，则猪易患疾病。因此，必须加强饲养管理，保持圈舍通风换气、清洁干燥，定期对圈舍进行，更好采取火焰法。同时要做到“五观察”，即观形态、观精神、观采食、观粪尿、观呼吸，一旦猪患病要及时诊断，尽早隔离。

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.