Frozen horse semen and fresh or chilled horse semen each have their own advantages and disadvantages, and quality can vary depending on several factors. Here are some comparisons between frozen semen and fresh/cooled semen:
- Sperm Survival Rate:
Fresh/Cooled Sperm: Fresh or cooled semen usually has a higher survival rate and fertilization potential immediately after ejaculation.
Frozen Sperm: Frozen semen undergoes some stress during the freezing process, which can lead to reduced viability and fertilization rate compared to fresh semen. When freezing sperm, we are always going to make sure that there is a sufficient number of total normal motile sperm present in the straws. - Shippability:
Fresh/chilled semen: It can be shipped and used quickly, which is convenient for breeders using artificial insemination with fresh or chilled semen.
Frozen semen: It can be transported over long distances and stored over a longer period of time before being used. - Cost:
Fresh/chilled semen: Generally, the cost of collecting, processing and transporting fresh/chilled semen is lower than for freezing and thawing semen.
Frozen semen: The cost of freezing, storing and thawing semen may be higher. - Flexibility:
Fresh/refrigerated semen: Provides more flexibility in terms of timing, as it is quickly available after ejaculation.
Frozen semen: Requires careful timing of ovulation and insemination, which requires some planning.
In general, frozen equine semen is considered of lower quality compared to fresh/refrigerated semen, but it offers advantages in terms of flexibility and availability over long distances. The choice between the two depends on the breeder's specific needs, breeding objectives and available resources. For many horse owners and breeders, the choice is based on the situation and desired benefits.
