Cooled & Frozen Semen

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

Article

Consequences

September 18, 2001

Do you want a say-so in what the United States government is doing that concerns horses? I’m talking about the issue of allowing equine semen into this country with even less testing than presently is required. Horse breeders know that semen can... Read More

Article

Semen Evaluation

January 01, 2001

Breeding horses today often involves the use of artificial insemination (AI) with fresh, cooled, or frozen semen (except for Thoroughbreds). But whether you are using AI or live cover, the main goal is to get a viable sperm to fertilize a mature... Read More

Article

Canadian Equine Research

April 01, 1999

The University of Guelph, located in Ontario, Canada, is home of the world renowned Ontario Veterinary College (OVC). The university is a research-intensive and student-oriented facility. Its written mission is to serve society and to enhance th... Read More

Article

Does Frozen Semen Really Work?

February 01, 1998

It has been more than 40 years since Canadian investigators reported the birth of the first foal from the insemination of a mare using frozen stallion semen. Since then, the technology of semen freezing has evolved tremendously. On a... Read More

Article

APHA Passes New Rule On Transported Semen

November 01, 1997

American Paint Horse Association (APHA) stallion owners are no longer limited to the number of mares bred with transported cooled semen. At the APHA’s annual convention, held October 2-4, directors passed a rule eliminating the old... Read More