Liquid assistance program PT. KMI in collaboration with the Bontang Food Security, Fisheries and Agriculture Agency has a large potential impact on increasing the productivity of cattle farms in Bontang. Where this liquid N2 liquid has the function of distributing semen/sperm from the place where superior cattle seeds are taken to the place where the host is injected. So it is very important the role of liquid N2 to support the process of artificial insemination.