Cooled & Frozen Semen

Article

Genetic Concentration: Too Much of a Good Thing?

May 24, 2008

"For years we've taught the industry about reproduction, but we haven't taught about breeding," said Gary Carpenter, executive director of the American Quarter Horse Foundation during a roundtable at the International Equine Summit, held in... 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

Article

Ice Formation Not to Blame for Loss of Viability in Preserved Equine Sperm

September 27, 2007

Loss of spermatozoa viability following cryopreservation, historically attributed to the formation of intracellular ice, is now believed to be a result of an osmotic imbalance during thawing. Osmotic imbalances result in the movement... Read More

Article

Reducing Breeding-Induced Endometritis by Simplifying Management?

February 01, 2007

Modern breeding management and assisted reproduction might actually exacerbate the issue of mating-induced endometritis, according to Mats Troedsson, DVM, PhD, Dipl. ACT, a professor of equine theriogenology in the Department of Large Animal Clinical... Read More

Article

Shipping and Disease: EVA

September 01, 2006

One of the major problems with EVA is how easily it can be transferred from one horse to another. Of course there is the respiratory route, where nasal secretions spread the virus from horse to horse through a barn or training stable.... Read More

Article

Frozen vs. Cooled Semen

January 01, 2006

We are getting ready to breed our mare to a stallion whose semen is only shipped frozen. Does using frozen-thawed semen instead of cooled semen reduce the chances of our mare getting pregnant? Read More

Article

Breeding Globally--AI Advances

December 01, 2005

Breeding without boundaries; it sounds like science fiction. Yet today we can breed two animals from different time zones, even different continents, through advances in artificial insemination. In this article, we will delv... Read More

Article

International Breeding

July 01, 2005

I brought two Walking Horse mares to France. I would like to breed to a U.S. stallion and want to know what the success rate might be with shipped frozen or cooled semen. Will I run into importation red... Read More

Article

Sperm Membrane Integrity (AAEP 2004)

February 14, 2005

While a large part of microscopic semen evaluation centers around motility (directional sperm movement) and morphology (sperm structure), some reproductive specialists think there's more to the story. In an attempt to better understand stallion... Read More

Article

Advances in Artificial Insemination

December 15, 2004

Artificial insemination (AI) is becoming an increasingly popular method for breeding horses, and with that comes advances in the timing methods used to inseminate mares. "Breeders have embraced the use of transported cooled semen for all the... Read More

Article

Artificial Insemination Made Simple (AAEP 2003)

February 03, 2004

Squires said the perception in the industry is that mares must be examined four to six times per day to use frozen semen successfully. He said the reasons for frequent examination are because limited semen is made available and the desire to breed as... Read More

Article

Evaluating Semen Quality

June 03, 2003

Stallion owners must determine if their stallions have what it takes physically to make a good breeding prospect, including good semen quality, before the start of the breeding season. In his presentation at the sixth annual Equine School at the... Read More

Article

Shatner's Ex-Wife Sues Over Horse Semen

May 15, 2003

According to an Associated Press story, "Star Trek" star William Shatner's ex-wife has sued him for breach of contract over breeding privileges of three American saddlebred stallions.

“Marcy Lafferty Shatner claims in her civil lawsuit... Read More

Article

Uterine Lavage Before Insemination Not Harmful to Mare Fertility

April 23, 2003

Uterine lavage can be performed immediately prior to artificial insemination in mares without adversely affecting fertility, according to a recent study completed at the University of Idaho (UI) in Moscow, Idaho. The uterine lavage process is... Read More

Article

AI Made Easy

February 04, 2003

When frozen semen was first introduced, pregnancies were achieved by checking the mare frequently each day and breeding with a single dose of semen as close to ovulation as possible. Therefore, this was adopted as standard operating procedure, said ... Read More

Article

Horseman's Day at the 2002 AAEP Convention

December 17, 2002

Horseman’s Day, held for the third time as part of the annual AAEP convention, was another rousing success. There weren’t as many people in attendance as there were in San Diego last year, but they were just as enthusiastic. AAEP officials said... Read More

Article

Factors Affecting Fertility with Cooled Semen

November 26, 2002

With the use of cooled shipped semen on the rise, breeders want to maximize the effects of this new technology as best they can. However, there are a variety of factors that can affect fertility with cooled semen, said Dickson Varner, DVM, MS,... Read More

Article

Foal Sex Selection

November 01, 2002

Sex selection of foals prior to conception is highly desirable for horse breeders. Currently, sperm can be sorted by their X and Y chromosomes, improving odds of sex selection through artificial insemination. Flow cytometry measures DNA in cells... Read More

Article

Effects of Airport Radiation on Shipped Semen

October 25, 2002

As airports across the country and around the world continue to tighten security, there is a growing concern among some researchers that increased irradiation levels for screening luggage and shipped parcels have the potential for damaging... Read More

Article

Finding a Suitable Cooled Semen Facility

October 01, 2002

Q: I'm considering using shipped cooled semen for my mare. I want to find a reliable farm/facility to take the shipment and breed her. How do I find a qualified facility? What questions do I need to ask about quality? ... Read More

Article

Modifying Semen Extender

June 01, 2002

Stallion semen is particularly susceptible to freeze-thaw damage, so multi-step procedures are being developed and evaluated to slowly extend and cool the semen prior to freezing it. In addition, the common semen extender INRA82, developed at... Read More

Article

Scientists Uncover New Way to Assess Ovulation

February 13, 2002

Veterinarians generally assess whether a mare has ovulated and is ready to breed by rectal palpation. However, new research suggests that a mare’s blood plasma sample can tell the veterinarian just as accurately that ovulation has occurred. The... Read More

Article

AAEP Convention 2001: Reproduction Research

February 01, 2002

Presentations on reproduction have long been a hallmark of AAEP gatherings, and this year was no exception. The full-day reproduction session was split into two parts--the first was of a general nature, while the afternoon in-depth session... Read More

Article

A Breed Apart: Cooled and Frozen Semen

October 15, 2001

The shipping of cooled and frozen semen has opened the door to a wide variety of breeding opportunities for horse owners, providing, of course, that their breed organization permits artificial insemination (AI) with shipped semen. A mare in New... Read More

Article

Freezing Semen

October 08, 2001

The technology that allows us to freeze a stallion's semen for future use has opened up a world of opportunities. Not only does it allow the stallion's DNA to be available to mare owners around the globe, but it enables a stallion to stand at stud wh... Read More