A cold
The suitable temperature for pig growth is: newborn pigs 35 to 32°C, nursery pigs 26 to 20°C, middle pigs and big pigs 23 to 15°C. The effect of low temperature on growth and weight gain of pigs is extremely serious. When the temperature of the pig house is lower than the lower limit of the suitable temperature, the daily weight gain can be reduced by 17.8 g for each 1 °C decrease; if the temperature continues to fall below 4 °C, the increase in temperature will increase. Heavy speed can be sharply reduced by 50%, increasing feed consumption by more than 1 time. To this end, winter breeding fattening pigs and pregnant pigs should take comprehensive measures to keep warm (such as pigskin covered with plastic film, etc.). Feeding tiller pigs and nursery pigs should be heated by heating equipment, which can use geothermal heat, stoves, central air-conditioning and incubators. And other heating equipment to reduce the consumption of the body's metabolism in order to improve the efficiency of feeding.
Two afraid of the tide
When the ambient temperature is low, the relative humidity will make the pig feel cold. This low-temperature and high-humidity environment will seriously affect the pig's production performance, especially for young pigs. Piglets in pig houses with high relative humidity in winter have an average weight gain of about 48% lower than that of the control group, and are likely to cause diseases such as diarrhea and enteritis. The relative humidity required for different pigs is: 70% for fattening pigs with piglets of 50-70%, 40-80 kg body weight, 80% for finishing pigs with 80-110 kg, and 55-80% for breeding sows, preventing pigs The dampness in the house ensures dryness, which can be solved by means of ventilation, increased light, and increased warming of dunnage.
Three afraid of cool
If the water temperature and material temperature are 0°C, increase the temperature of these water and material to a body temperature of 39°C. The pig body will consume 682 to 878 kcal of heat energy, which means that 0.5 to 0.75 kilograms of sperm per day is needed. The material was consumed in vain to maintain body temperature. Winter sows feeding cold water can also cause miscarriage and other adverse consequences. Therefore, raising piglets and sows in the winter, it is best to feed warm and warm water, the water temperature is maintained at about 37 °C.
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