Currently, the technology of using liquid nitrogen to freeze animal semen for artificial insemination has been widely used in livestock production.
Because the temperature of liquid nitrogen is -196°C, and its boiling point is low, it is easy to volatilize and is difficult to store. Non-special containers - liquid nitrogen tanks cannot be stored well, let alone serve as a refrigerant for freezing semen. Therefore, it is difficult to use Liquid nitrogen containers for storing semen have become one of the essential equipment in animal husbandry.
In animal husbandry applications, in addition to preserving animal semen as mentioned above, liquid nitrogen tanks are also mainly used for freezing embryos, preserving veterinary drugs, vaccines, etc. Of course, the main focus is on the preservation and transportation of sperm from male animals such as pigs and cattle.