What is a dose of semen?
A. A dose of semen is the amount of semen it takes to impregnate a mare in one cycle. The minimum amount of semen is 500 million. Most farms provide more than that. Semen is packaged in straws. The amount of straws in a dose can vary from 1 large straw to 10 .05 straws. Some straws hold 250 million sperm while others may only hold 75 million.