Featured Blog: Methods to Obtain the Concentration of Sperm in a Stallion Ejaculate

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February 02, 2018

Posted by Erin Bishop, MS in Stallion Management

NucleoCounter2 croppedKnowing 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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Care of the Newborn Foal

January 05, 2018

Posted by Dr. Dave Scofield in Foal and Neonate Care

foaling mare What transpires in the first 24 to 48 hours of a foal’s life is critical to his health and well-being from early life and up through weaning. As a foaling attendant there are several “milestones” to keep in mind as you watch the behavior of both the baby and the mare post-foaling. In this article we discuss the milestones they both should make within the few hours after the foal’s arrival into his new world. The care delivered, attention to detail, and respect for the nature of the horse will help set up your foal up for a healthier adolescence.

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Management of Late Gestation Pregnancy Loss in the Mare

December 11, 2017

Posted by Dr. Ute Pansegrau in Mare Management

Breeding season in the northern hemisphere is over and hopefully all mares are in foal. Waiting for the arrival of the foals next year has begun. But what if something goes wrong? Abortion after day 45 of gestation occurs up to 3 to 15% in different horse populations. Infectious and non-infectious causes can be involved. It is important, that as long as the etiology of the pregnancy loss is undetermined, every abortion should be assumed as infectious until proven otherwise. How do you best handle the situation when a mare aborts and how do you prevent further damage to the mare or her fellow broodmares?

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The Major Causes of Damage to Sperm During Freezing…water and salts and ice, oh my!

November 06, 2017

Posted by Paul Loomis in Frozen Semen

Sperm Survival_Membrane Graphic I have always been fascinated by the exquisite design of biological systems. The more we humans understand about biology, the more we realize we don’t know. The process of mammalian fertilization is one of these complex biological systems that in nature requires the proper coordination of so many factors ranging from the behavior of male and female to biochemical changes at the cellular and molecular level. Defined as: “A process in sexual reproduction that involves the union of male (sperm) and female (ovum) gametes (each with a single, haploid set of chromosomes) to produce a diploid zygote”, fertilization requires that functionally viable sperm, at the right stage of maturity, are present in the oviduct of the mare during a brief window of time when a functionally viable oocyte is present.

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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.

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