Chilled semen does not need the difficult handling procedure of the frozen semen, and the insemination can be done by veterinarians who are not specialists in reproduction, and even by experienced breeders with basic knowledge of reproduction. The insemination can be done into the vagina, the same as with fresh semen.This type of semen is becoming very popular amongst the breeders due to its easy handling, low cost, it is easy to send and the regulations are often not as strict regarding its transport and that of the nitrogen container in the airlines.To inseminate with chilled semen, the ovulation time has to be previously determined through a Progesterone test or with ultrasound control ultrasound control. Once we know when the optimal insemination time is, we order the semen collection and dilution. We should receive the semen within 14 to 30 hours after the extraction. The first insemination is done on the arrival date and the second one 24 hours later.
The success rate is between 80-90% (very similar as that of fresh semen).