A professional who measures purity and potency of animal semen to develop improved methods of processing and preserving for artificial insemination. Responsibilities include:

• Observes sample of freshly collected semen under microscope to determine mobility of sperm cells.
• Measures density, using densiometer.
• Adds measured amounts of extender, sodium citrate, and antibiotics to dilute and preserve sample.
• Transfers to refrigeration unit.
• Records data for use in compiling history of sire.
• Cleans and sterilizes laboratory equipment.
• Performs experimental tests, as directed, for purposes such as extension of cell survival rate and development of improved preservation processes.
• Cultivates, isolates, and identifies pathogenic bacteria and other micro-organisms in semen.