Four AI treatments were selected: 1) a 20 million
sperm dose of non-purified spermatozoa; 2) a 10 million sperm dose of non-purified
spermatozoa; 3) a 10 million sperm dose of spermatozoa purified with PNA-particles; and 4) a
10 million sperm dose of spermatozoa purified with ubiquitin-binding particles.