The specific method of piglet heat preservation: (1) Increase the temperature of sow delivery room: Cover the enclosure (closed enclosure) for sow delivery with plastic film and straw curtain to keep the temperature in the enclosure above 17℃. But it is necessary to leave a vent at the height of 1. 5-2 meters, to prevent the increase of ammonia and carbon dioxide concentration in the column from endangering the health of the mother. Put 1.5-2 square meters of mattress hay in the litter box to avoid a lot of heat dissipation on the ground. (2) Put a 1.5 square meter piglet incubator at the stall, with 20cm (6cm) hay on the bottom of the board, or put a board and 20cm T grass on the board in a corner of the delivery room. Or an insulation zone is separated in the compartment. (3) Bring the piglets back to the heat preservation zone after each feeding in the first three days after delivery, and open the entrance and exit of the piglets to let them in and out by themselves after three days. After 7 days, the temperature was reduced to 1℃ every day until 15-20 days later, the temperature was reduced to 20℃-25℃.

The measure of heat preservation is to create a warm microclimate environment for piglets alone. The best way is to set up a piglet incubator in the production column, hang 1 250 watt infrared light bulb in it, leave the entrance and exit of piglets in the piglet box, or lay a heat insulation board (electric heating board) in the piglet box.

If there is no power supply or in order to reduce electricity consumption, you can also use wooden boards to spread straw bags or sacks, and then buckle the glass fiber reinforced plastic cover (the side of the cover is provided with a curtain for pigs to enter and exit, and the cover is provided with an openable cover), so as to create a warm environment by using the body temperature of pigs. If there are no conditions, you can also hang a hay handle in the piglet incubator so that piglets can drill in it to keep warm.