Recent News for Assisted Reproduction

Article

AAEP Convention 2005: Problems With Multiple Embryo Collection

February 17, 2006

Embryo transfer has been well-established in the horse industry as a method of obtaining multiple offspring from a valuable donor mare. The increased usage of this technique prompted Colorado State University (CSU) researchers to examine the... Read More

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AAEP Convention 2005: Increasing Embryo Recovery and Fertility

February 17, 2006

In a study from the University of Saskatchewan, Canadian researchers compared ovulation rates, embryo recovery and quality, and subsequent pregnancy rate using two estrus synchronization methods--prostaglandin (PG) administration and progesteron... Read More

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AAEP Convention 2005: Optimizing Pregnancy Rates for Frozen-Thawed Semen

February 17, 2006

A major disadvantage associated with frozen-thawed semen is the fertility of the semen, which can be considerably less than fresh semen. This can be problematic when deciding how many progressively motile sperm (PMS) are needed per breeding to... Read More

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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

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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

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Breeding Specialists

December 01, 2005

The equine breeding industry has evolved dramatically with the introduction of artificial insemination programs and advanced assisted reproductive techniques. While live cover breeding pro-grams are still a mainstay for specific breeds, many... Read More

Article

Company Offers Commercial Cloning

October 01, 2005

A San Francisco, Calif., company announced in late July its intention to clone one individual's horse for profit, at a cost of $367,593 for implanting clone embryos into 100 mares plus additional patent royalties based on the number of clones... Read More

Article

Supplementing for Semen Quality

September 01, 2005

Cooling and freezing equine semen damages cell membranes, which results in loss of motility and general viability known as "cold shock." Most domestic species have high concentrations of polyunsaturated fatty acids (PUFAs) in the semen, but the... Read More

Article

Company Offers Cloning to Customers

August 08, 2005

A San Francisco, Calif., company has announced its intention to clone one individual's horse in short order for commercial profit, to the tune of $367,593 plus additional patent royalties based on the number of clones that are produced and... 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

Old Horses, Old Problems

June 01, 2005

It is amazing how many horse owners have one or more horses over the age of 15. My daughter's old Arab mare is 22 this year. She's slowed down (somewhat), has a bit more trouble getting up and down, and has a little more sway to her topline, but... Read More

Article

Champion Horse Cloned

June 01, 2005

Italian researchers announced on April 14 that the first clone of a sterile horse is healthy and thriving. The Arabian colt, a genetic copy of U.S. endurance rider Valerie Kanavy's two-time World Champion horse Pieraz, proves that researchers ca... Read More

Article

American Horse Cloning Project Successful

June 01, 2005

America's first cloned horse turned six weeks old on April 27, according to Texas A&M University (TAMU) researchers who partnered on the successful cloning venture with French scientist Dr. Eric Palmer of Cryozootech. The colt, named "Paris... Read More

Article

Mule Clones Head for the Races

May 05, 2005

University of Idaho mule clones Idaho Gem and Idaho Star are headed for the races.

But first the pair must complete nearly a year of training before they actually reach a racetrack in 2006. That's when the two clones will begin to prove... Read More

Article

Clone Characteristics

May 03, 2005

Prometea, the world's first horse clone, turns two years old this month. Italian researcher Cesare Galli, DVM, of the Laboratorio di Tecnologie della Riproduzione-Consorzio per l'Incremento Zootecnico (LTR-CIZ) in Cremona, says the filly is... Read More

Article

American Horse Cloning Project Successful

April 27, 2005

America's first cloned horse turned six weeks old today, according to Texas A&M University (TAMU) researchers who partnered on the successful cloning venture with French scientist Dr. Eric Palmer of Cryozootech. The colt, named "Paris Texas,... Read More

Article

Clone of Endurance Champion Thrives

April 14, 2005

Italian researchers today (April 14) announced that the first clone of a gelded horse is healthy and thriving. The Arabian colt is a genetic copy of U.S. endurance rider Valerie Kanavy's world champion Pieraz and represents the ability of... Read More

Article

Champion Endurance Horse Successfully Cloned

April 14, 2005

As was reported earlier today, Pieraz, the two-time World Champion endurance gelding owned by Valerie Kanavy of Virginia, was successfully cloned in Italy by Eric Palmer,DVM of the Italian laboratory LTR-CIZ, in collaboration with Cryozootech.... Read More

Article

AAEP Convention 2004 Wrap-Up: Reproduction

March 03, 2005

Pregnancies from Euthanized Mare Ovaries

"You think breeding mares on foal heat is tough, try dead mares!" said Elaine Carnevale, DVM, PhD, professor in equine reproduction in the department of biomedical sciences at Colorado State... Read More

Article

Embryo Transfer Discussed

February 15, 2005

Much of the discussion involved sharing professional information, such as specific instruments involved, but they also addressed such matters as preparation of the recipient mare and the most optimum state of embryo maturation for transfer.... 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

Pregnancies from Dead Mare Ovaries

February 14, 2005

"Death or euthanasia of a valuable mare results in loss of her genetic potential," she said. "However, when a mare dies, her ovaries still contain potentially viable oocytes that can be harvested to produce additional offspring."... Read More

Article

Increasing Embryo Recovery Rates and Transfer Success

February 14, 2005

Hudson found that embryo recovery can be enhanced by slight modifications of the standard embryo flush technique, and embryo transfer success can be improved by verifying that the embryo was not retained in the tip of the sheath with which the veteri... Read More

Article

The ART of Breeding

February 01, 2005

Successful breeding of horses is not always as easy as presenting a receptive mare to a fertile stallion. There are many things that can go awry with the reproductive process. Broodmares that were once fertile and produced many excellent foals... Read More

Article

Stretching Semen in the Aged Stallion (AAEP 2004)

January 26, 2005

As breeding stallions age, their reproductive abilities can wane, leaving their breeding managers with a problem--too many mares to breed, and not enough sperm. J. Scott Weems, DVM, of Weems & Stephens Equine Hospital in Aubrey, Texas, has... Read More