Featured Blog: Effect of Number and Timing of Equine Frozen Semen Inseminations on Fertility

Blog RSS Feed

December 03, 2014

Posted by Dr. Ed Squires in Mare Management

Further expansion in the use of frozen semen is dependent upon developing simplified strategies for insemination. SBS has developed a timed insemination protocol where mares are only examined once per day during estrus and inseminated at 24 and 40 hr after hCG or 30 and 40 hr after GnRH. This approach allows frozen semen mares to be managed similar to those bred with cooled shipped semen. A couple of arguments against this approach with frozen semen is that it takes too much semen when mares are bred twice in one cycle and that if the mare is inseminated more than once per cycle the fertility will be lowered because of post-breeding induced endometritis. However, in a new retrospective study across 1871 mare cycles bred by SBS affiliate labs, we report additional support for the use of two inseminations per breeding cycle.

Read More

Quality Control is at the Core of the SBS Difference

October 31, 2014

Posted by Paul Loomis in Frozen Semen

Quality Control_SBS Extender LabThe SBS network of affiliates is the acknowledged leader in the field of cryopreservation of equine semen. Each year we freeze thousands of ejaculates equating to tens of thousands of doses. In fact, this year the SBS Network will surpass the 50,000 ejaculate milestone since the company’s founding in 1987. When SBS was founded the company leadership made a commitment to quality of the finished product above all else. We wanted to put technology to use to help grow the equine frozen semen AI industry in the most responsible manner possible. It was clear early on that one of the major factors limiting the application of frozen semen in the horse industry was inconsistent quality of the product being put on the market. Breeders and veterinarians experienced frustration with attempts to use expensive semen that in many cases was of very poor quality. We knew that in order for breeders to realize the full potential of frozen semen technology they would have to be convinced that by applying strict standards for quality, frozen semen could be produced to achieve results similar to cooled semen. We also knew that these results would have to be produced in an efficient and economical way. Quality became the cornerstone upon which we would build our business.

Read More

Test Breeding Mares as an Aid to Marketing Equine Frozen Semen

October 05, 2014

Posted by Dr. Brian Carroll in Frozen Semen

Stallion owners and managers can encounter reluctance from mare owners to use frozen semen. This may be due, in part, to commonly spread misinformation regarding the fertility of frozen semen and the misconception that frozen semen is difficult to use. This hesitancy seems especially true if the frozen semen of a particular stallion has yet to be used in order to establish evidence of fertility. If one can offer specific credible evidence of the fertility of frozen semen from a given stallion it can go a long way towards promoting the process and breedings to your stallion. For more information please read “Frozen Semen Myths and Misconceptions” as well as our blog article regarding “The Pros and Cons of Equine Frozen Semen”.

Read More

Heat Stress and Equine Reproduction

September 09, 2014

Posted by Paul Loomis in Stallion Management

Istock_sweaty harness horse cropped During those dog days of late summer and the end of the breeding season, most of us who work in equine reproduction are ready for a break. You are left with those difficult mares that didn’t settle earlier in the season and stallions that may be growing tired of breeding. Mares may not cycle as predictably or conceive as readily and stallions may be tougher to collect or exhibit a decrease in semen quality. One of the factors that can contribute to these problems is heat stress. As ambient temperatures rise, stallions and mares may experience disruptions to normal reproductive function as a result. This article will briefly describe some of the effects of heat stress on mare and stallion reproductive function.

Read More

Please Note - photos used in these news articles are available in the public domain, have been purchased through istockphoto or (when referencing breeders or horses) have been submitted to Select Breeders Services Inc. by the breeding farm or horse owner. Photo credit has been provided where applicable. If at anytime you see something that needs to be addressed please feel free to contact us directly.

Sign up for our Email Newsletter

Just enter your email address below!