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Featured News: Ovum Pickup Available at SBS Veterinary Services Beginning in April 2015

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February 26, 2015

SBS - VS_mare and foal In April 2015, Dr. Scofield and the staff at SBS Veterinary Services are pleased to announce the addition of Trans-Vaginal Oocyte Aspiration (TVA) as a service offered at their clinic in Chesapeake City, Maryland. TVA, also known as Oocyte Pickup, shows promise in producing foals from the most reproductively challenging mares and stallions with limited frozen semen reserves. As Dr. Young explained in last months Blog article, Ovum Pickup in the Mare, TVA and Intra-cytoplasmic Sperm Injection (ICSI) offer the latest in assisted reproductive technology to help produce foals.

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Featured Blog: Biofilms in Mare Reproduction

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February 27, 2015

A biofilm has been proposed to have a significant role in chronic infections in the horse. It has been suggested for over a decade that chronic uterine infections resistant to antimicrobials may be due to biofilm production. The involvement of a biofilm in cases of bacterial endometritis has not been clearly elucidated, but many reproductive specialists suspect a biofilm plays a significant role in infectious endometritis. In this article Dr. Ryan Ferris, a board certified theriogenologist from Colorado State University, explains the lifestyles of bacteria, how a biofilm is formed, how they protect bacteria and their implications on equine reproduction.

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Featured Question

Is it true that some mares are more likely to get infected when inseminated with frozen semen?

The early theory was that mares accumulated more fluid in their uterus after insemination with frozen semen, thus making people think of an infectious process. Recent work has been published in this area to explain why people were visualizing a greater amount of fluid after insemination. Researchers came to the conclusion that people were checking the mares more often when using frozen semen, thus giving the mares less time for their uterus to clear the fluid. This transient accumulation of fluid is a natural reaction of the uterus in response to the presence of the spermatozoa themselves and would be seen in the mare even after insemination with cooled or fresh semen. For this reason the reaction should be considered an inflammatory response rather than an actual infection, which are two different things. Another point to consider is that seminal plasma is known to limit the inflammatory response of the uterus when presented with sperm cells. Many people try to completely eliminate this portion of the ejaculate when processing semen for freezing. The protocol used by SBS to freeze semen does not involve removing all of the seminal plasma from the ejaculate.

See also: Factors Affecting the Uterine Inflammatory Response to Semen, The Facts About Frozen Semen and Post-Breeding Uterine Fluid, Effect of Number and Timing of Equine Frozen Semen Inseminations on Fertility, and Biofilms in Mare Reproduction

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