Recent News for Assisted Reproduction


Second Mule Clone Born

August 01, 2003

The research team that made headlines in May after producing the world's first equine clone--a mule named Idaho Gem--on June 9 has repeated its success with the birth of another mule--Utah Pioneer.

Researchers Gordon Woods, DVM, MS, PhD,... Read More


Third Equine Clone Born Healthy

July 28, 2003

The scientists who produced the world's first clone born to the horse family have announced that the third cloned mule foal was born yesterday (July 27).

The team includes Gordon Woods, DVM, MS, PhD, Dipl. ACT, and Dirk Vanderwall, DVM,... Read More


First Sexed Offspring of the World's First Sexed Mare and Stallion Born

July 08, 2003

Researchers led by XY Inc., a global biotech company in Fort Collins, Colo., were recently successful in their quest to produce the first sex-selected offspring of the world’s first sex-selected mare and first sex-selected stallion. “First Lady”... Read More


AI, Stallion Book Size Among Topics at Conference

July 01, 2003

Artificial insemination (AI) and stallion book size were among the more controversial topics discussed as university professors from across the United States, Great Britain, Australia, and Israel gathered in Louisville, Ky., June 25-28 for the... Read More


Second Cloned Mule Born

June 11, 2003

The same research team that produced the world's first cloned member of the horse family, a mule, has repeated its success with the birth of “Utah Pioneer” early Monday morning.

Researchers Gordon Woods, DVM, MS, PhD, Dipl. ACT, and... Read More


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


The World's First Equine Clone

May 30, 2003

The landscape of equine reproduction research dramatically changed yesterday (May 29) when a University of Idaho (UI) and Utah State University team announced they were the first to clone a member of the equine family--the mule--according to an... Read More


Idaho, Utah Researchers Successfully Clone Mule

May 29, 2003

A University of Idaho--Utah State University research team is the first worldwide to clone a member of the horse family, a mule, according to an article to be published in the journal Science.

The research team includes Gordon... Read More


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


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


Embryo Transfer Technique

April 01, 2003

Advanced reproductive technologies that can be used in horses are expanding every year. Geography is no longer a limiting factor in choosing a mate for your mare, as fresh cooled semen can be shipped across North America with ease. Frozen semen also ... Read More


AAEP Convention: Horseman's Day

March 01, 2003

Horseman's Day, held for the third time as part of the annual AAEP convention, was another rousing success. Helping stimulate the interest and enthusiasm was the quality of the speakers. They couched their talks in terms the average horse owner... Read More


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


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


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


Deep Horn Insemination Technique

November 08, 2002

In his presentation "Deep Horn Insemination" at the Hagyard-Davidson-McGee Bluegrass Equine Reproduction Symposium Oct. 25, John Steiner, DVM, Diplomate ACT, discussed two ways to use minimal numbers of sperm deposited at the tip of the uterine... Read More


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


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


Purina Veterinary Conference 2002

October 16, 2002

Only 20 miles from downtown St. Louis, Mo., is a 1,200-acre research farm owned by the nutrition company Purina Mills. On Oct. 3-5, 140-plus veterinarians and another 50 Purina Mills representatives gathered to tour that research facility and... Read More


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


New CSU Semen Facility Meets International Standards

September 11, 2002

The new stallion barn at Colorado State University’s Equine Reproduction Laboratory, specifically designed to meet the requirements for exporting semen internationally, is now complete and prepared to handle client requests around the... Read More


AQHA Settles Embryo Transfer Lawsuit

June 12, 2002

The American Quarter Horse Association has eliminated all restrictions regarding the registration of foals produced through embryo transfer as part of an out-of-court settlement with a coalition of breeders.

For a couple of years, the... Read More


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


Texas Judge Upholds Antitrust Ruling Against the AQHA

May 30, 2002

A Texas judge reaffirmed on May 16 his earlier decision that an American Quarter Horse Association (AQHA) rule restricting the number of registered foals produced through embryo transfer violates the state's... Read More


Flushing Solution?

May 01, 2002

I worked at a breeding farm when I was in high school, and after we inseminated the mare we flushed the tube with some type of solution that either was skim milk or reminded me of skim milk. What was that solution and was it necessary?... Read More