Knowing and keeping track of the concentration, or the number of sperm per milliliter, of each ejaculate for a stallion is very important for a variety of reasons. The concentration of his semen, along with the volume of his ejaculate, is used to determine the total number of sperm he produces in a given collection. These two numbers (volume and concentration) are used to calculate insemination doses. Also, keeping a record of each number can help stallion managers recognize if there are any changes in the reproductive health of the stallion. Slight variations are likely nothing to be concerned about. However, if the number of sperm in the ejaculate varies drastically, from collection to collection or a steady decrease in his total number of sperm over time, one may begin to ask what is causing the change. This information is valuable so that any concerns can be addressed as soon as they arise.
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Methods to Obtain the Concentration of Sperm in a Stallion Ejaculate
Shuttle Stallions - Frozen Semen to the Rescue
Shuttle or Dual-Hemisphere Stallions are terms used to describe breeding stallions which travel between the Northern and Southern Hemispheres for their respective breeding season. Several questions arise when discussing shuttle stallions and may include: Why do stallion owners incur the costs and risks of sending their stallions thousands of miles away? Does the lack of sexual rest affect their fertility? Is there a way to service mares in a different hemisphere without sending the stallion so many miles away?
Contract Considerations for Exporting Equine Frozen Semen
The tests have been done and the frozen semen is ready for export…Now what? In our article, Exporting Frozen Semen from the United States, we covered topics ranging from determining if there is a foreign market for your stallion, to how to export the semen once it’s been frozen. Stallion owners/agents also need to consider how they are going to offer the frozen semen to a foreign market in the form of their breeding contract. In this article, we will discuss ways to sell the semen (by the dose or with a live foal guarantee), responsibility of shipping fees, what is to be done with leftover doses as well as who covers the costs of health testing and freezing, plus more.