The pig's sperm is very sensitive to low temperatures. Once the temperature is lower than 14 degrees, the sperm will suffer a cold blow and lose fertility. Therefore, transporting semen in winter is particularly important. Insulation is carried out by placing a hot water bottle filled with 60-degree hot water in a vaccine box, covering it with 6-8 layers of towels or a small quilt, and then placing the semen bottle or semen bag on top and covering the vaccine box. cover. It is also possible to transport semen into underwear pockets. This method has a small amount of transport. Although it is practical, it gives the impression that the user is not regular enough.
It may be more advantageous if the temperature can rise to 20-25 degrees before the semen is inseminated. Because of this, it is possible to avoid inseminating the sow at a lower temperature, the semen temperature may fall below 14 degrees, which is not only unfavorable to the survival of the sperm, but also may cause the uterus to shrink due to low temperature stimulation and cause semen backflow. To conception rate. Especially in North China, especially in the northeast, more attention should be paid.