Artificial Insemination

Article

10 Steps for Successful Artificial Insemination for Horses

December 01, 2010

Artificial insemination (AI) is today's breeding standard for many types of horses. To find out how to make our readers' artificial insemination programs more successful, The Horse went to two recognized experts in equine artificial insemination... Read More

Article

Safe (Equine) Teasing

December 01, 2010

Teasing is essential to detect when a broodmare is in estrus, but it's no easy feat due to the size and power of the animals involved. Safety should be top priority--to avoid injury to horses and people.... Read More

Article

Endometritis in Horses Explained

November 01, 2010

Often, the only clinical sign of endometritis is not what you do see but what you don't see: a pregnancy. Endometritis is a major cause of female infertility, affecting up to 15% of broodmares. But because it frequently lacks clear clinical signs... Read More

Article

Equine Reproduction Advances Discussed at AAEP

February 16, 2010

What was the hottest news in equine veterinary medicine in 2009? During the popular Kester News Hour session at the annual American Association of Equine Practitioners (AAEP) Convention, three top veterinarians (who focus on equine reproduction, inte... Read More

Article

Semen Centrifugation Speeds Examined in Study

January 17, 2010

Theriogenologists typically recommend low centrifugation speeds for separating equine semen from seminal plasma in ejaculate, as it was unknown whether higher speeds would damage the cells. However, higher forces did not damage sperm in a new s... Read More

Article

AI With Cooled and Frozen Semen AAEP Table Topic

December 23, 2009

Timing of mare insemination with cooled and frozen semen was one of the hot topics at a session of veterinarians at the 2009 American Association of Equine Practitioners (AAEP) Convention in Las Vegas, Nev. The topics discussed in the AI With C... Read More

Article

Breedings to Deceased Stallions Offered Via Injection Technique

November 17, 2009

A reproductive technique called intracytoplasmic sperm injection (ICSI), in which a sperm cell is injected directly into an egg, has resulted in foals from many mares that were no longer able to produce. However, it might be equally as... Read More

Article

Sexed Equine Semen Available Commercially in 2010

November 12, 2009

The ability to have stallion semen sorted for sex-selected foals is being offered on a commercial basis through a new alliance between Sexing Technologies and Equine Reproduction Innovations. The use of sex-selected semen in conjunction with... Read More

Article

Equine Reproduction Course Offered for Ontario Horse Owners

November 01, 2009

A two-day equine Reproduction course, designed for anyone interested in learning about artificial insemination (AI) techniques for horses, will be offered Nov. 7-8, 2009, in Clinton, Ontario, at the Regional Equine & Agricultural Centre o... Read More

Article

Equine Semen Extenders: Effect on Bacterial Growth and Sperm Viability

October 20, 2009

Preliminary results of a collaborative effort between researchers at Oklahoma State University and Texas A&M University were recently presented at the American Association of Veterinary Laboratory Diagnosticians in San Diego, Calif. These... Read More

Article

Stallion Hygiene Key for Improving Frozen Semen

August 22, 2009

The semen of some stallions tolerates freezing well, while the semen of others does not. Researchers are trying to discover the reasons for this in order to develop freezing protocols that decrease the variability of sperm, thereby increasing th... Read More

Article

CEM Study: Antibiotic-Treated Semen Can Reduce Transmission Risk

July 19, 2009

Researchers at the Gluck Equine Research Center will publish a study this fall on contagious equine metritis (CEM), a sexually transmitted disease in horses. Stallions are asymptomatic carriers of Taylorella equigenitalis, the causative agen... Read More

Article

Processing Dilute Semen for Artificial Insemination

April 20, 2009

Since artificial insemination is currently practiced in most equine breeds (except Thoroughbreds), processing semen for cooling and transport is a common task in most equine reproductive centers. However, processing a dilute ejaculate--one with... Read More

Article

Embryo Transfer in Chronically Infertile Mares, AAEP 2008

March 24, 2009

Embryo transfer is a management procedure for producing foals by mares that either are in training or have reproduction problems. In some cases the goal is to allow young performing mares to reproduce while continuing their careers. In other cases th... Read More

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Reproduction Research

March 17, 2009

During the 2008 AAEP Convention, experts discussed multiple topics relating to equine reproduction.... Read More

Article

New Tool for Counting Sperm

March 09, 2009

Equine practitioners now have a new, accurate tool for measuring stallion fertility--the NucleoCounter SP-100 fluorescence-based instrument. While it is more expensive than some instruments currently used for counting sperm, it is accurate and easy... Read More

Article

Breeding The Problem Mare With AI

March 08, 2009

"In my opinion, a mare that fails to become pregnant by AI with good semen quality and does so by natural cover without human intervention is an example of poor or inadequate breeding management by the personnel performing the AI," said Samper.... Read More

Article

Frozen Semen Use in Barren Mares

March 05, 2009

To rectify the lack of information problem, Barbacini and colleagues launched a study to determine the fertility of barren mares inseminated with either fresh or frozen-thawed semen. Researchers investigated the effects of mare age and uterine fluid... Read More

Article

Questions to Ask Before Breeding a Mare

February 02, 2009

Thinking of breeding your mare this spring? The recent outbreak of contagious equine metritis (CEM, which is caused by bacterium Taylorella equigenitalis) in the United States and the previous outbreak of equine viral arteritis (EVA) have... Read More

Article

Storm Cat to Serve as a QH Stallion

January 17, 2009

Storm Cat, a leading sire who was pensioned last year after experiencing fertility problems at the Young family's Overbrook Farm near Lexington, Ky., might return to the sire ranks as a Quarter Horse stallion. The Quarter Horse breeding industry... Read More

Article

Contagious Equine Metritis Investigation Progresses in Wisconsin

January 16, 2009

Veterinary authorities continue to connect the dots in the investigation into contagious equine metritis (CEM), a contagious venereal disease of horses. Earlier this week, officials... Read More

Article

Prevent CEM, Other Infectious Diseases Through Strict Hygiene

January 07, 2009

Strict hygiene guidelines should be followed whenever handling breeding mares or stallions to prevent reproductive infectious diseases, including contagious equine metritis (CEM).

CEM is spread between horses primarily by breeding, either b... Read More

Article

Breeding Equipment

October 01, 2008

Want your mare in Texas bred to a stallion in Germany? It’s easy with today's equipment and technology.... Read More

Article

Summit Speakers Discuss Equine Reproductive Technology

June 05, 2008

Four speakers discussed advances in assisted reproduction to wrap up the session on the emerging science of horse breeding at the Kentucky International Equine Summit, held in Lexington, Ky., April 28-29. The speakers agreed that the key is not... Read More

Article

Artificial Insemination: It's Not How Much You Have, It's Where You Put It

May 03, 2008

When it comes to artificial insemination in horses, the site of deposition might have a big impact on the procedure's outcome. Placing semen directly into the uterine horn containing the ready follicle could allow breeders to use far less... Read More