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Featured News: Equine Reproduction Days Seminar at SBS North Germany

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December 27, 2016

SBS North Germany_Seminar 1 The Equine Clinic Luesche/SBS North Germany, in cooperation with Task Force Horse (Arno Lidner), will be hosting their annual Equine Reproduction Days seminar from February 24 – 26, 2017. This year’s meeting will provide advanced equine reproduction practitioners with state-of-the-art lectures, wet labs and demonstrations on equine embryo transfer, embryo freezing, ovum pick-up (OPU) and intra-cytoplasmic sperm injection (ICSI). Participants will have the opportunity to improve their own clinical skills in small groups (not more than 7 persons) and sufficient time will be reserved for discussions.

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Featured Blog: Oxytocin Use in the Mare

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December 28, 2016

Oxytocin Use in the Mare_Injection Oxytocin is one of the most utilized hormones in broodmare practice. With so many possible clinical applications, a review of the use of oxytocin in the mare highlights the benefits of oxytocin, as well as necessary precautions with its use. Oxytocin is a nine-amino acid neuropeptide that is produced in the hypothalamus and released by hypothalamic neurons that terminate in the posterior pituitary. It is released in a natural pulsatile manner and exerts its effects by coupling with oxytocin receptors on various tissues such as the endometrium, myometrium, heart, kidney, pancreas, and fat tissue. There are also local effects of oxytocin and receptor binding, notably in the utero-placental tissues that help to increase the effect and intensity of pituitary derived oxytocin pulses. Clinically, oxytocin is available as a sterile injection, 20 IU (international units) per milliter. It can be administered intravenously or intramuscularly.

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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:

Influence of Mare Status When Breeding with Frozen Semen

The Facts About Frozen Semen and Post-Breeding Uterine Fluid

Not All Frozen Semen is Created Equally

Factors Affecting the Uterine Inflammatory Response to Semen

Biofilms in Mares


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