Breeding Process


10 Steps for Successful Live Cover

December 01, 2010

Promote safe and successful live cover breeding with careful preparation and attention to safety.... Read More


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


Bring Mares into Season with Lights

January 19, 2010

... Read More


Endometritis in the Mare

August 07, 2009

Endometritis, an inflammation of the interior lining of the uterus, continues to be a major cause of subfertility or infertility in the mare.

There are many diagnostic tools that have been developed to determine if a mare has... Read More


Unique Attribute of Equine Uterus Impacts Embryo Transfer

January 26, 2009

The equine uterine environment plays an integral role in the early developmental stages of pregnancy, even prior to implantation of the embryo, according to British researchers who recently examined the role of the uterus in ... Read More


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


As the Sperm Turns

December 01, 2008

Conception in the horse seems simple--a uniting of one healthy egg and one healthy sperm--but there is much more going on in this virtual soap opera of creating a new horse.

Fertilization is the beginning of a new... Read More


Behavioral Therapy Reduces War Emblem's Breeding Foibles

July 14, 2008

Moved to a tranquil area away from other stallions and shielded from most visitors, temperamental champion and dual classic winner War Emblem now spends his days in a quiet grassy paddock over looking fields containing grazing mares and... Read More


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


Best Breeding Approach

December 01, 2007

Q: For a horse reproduction project in my equine seminar course, I was trying to find video clips of horses breeding. Well, there were many on YouTube, and it took awhile to find the decent ones. But once I found some that were... Read More


The Business of Breeding

November 01, 2007

Breeding in the horse world breaks down into a few categories: field breeding (where the horses just do what comes naturally) live cover in a breeding shed, and artificial insemination. The tools of the trade range from very basic to high-tech ... Read More


Reinforcing Reinforcement Breeding

July 11, 2007

It's common practice at some breeding farms--collecting the drippings from a stallion's penis after he breeds and dismounts a mare, evaluating the sample to confirm that ejaculation did occur, then placing the sample in the mare. Reinforcement... Read More


Overexcited Stallion

February 01, 2007

I have a stallion that "saucers" (exhibits glans penis enlargement) prior to mounting. Any suggestions?... Read More


Keeping Stallions Focused

February 01, 2007

I'm a veterinary student from the United Kingdom and have been riding with a stud farm veterinarian in America going from place to place. I am trying to figure out the art of handling stallions for breeding. Can you please enlighten me on the... Read More


Live Cover Management

December 01, 2005

Many breed registries still require breeding be done by live cover--the stallion physically covers the mare. The actual mating process is an awesome spectacle, but can be dangerous to the mare, stallion, and handlers when done in hand-breeding... Read More


A Day in the Life of A Breeding Farm

June 13, 2005

A world away from hitting the finish line of a classic race in front of tens of thousands of screaming fans, the dream is reborn. In the quiet of a gray winter morning, when the earth throws its warmth off into the cold air and... Read More


Mothers to Be

May 19, 2005

While the socialization process of transforming fillies and mares from racetrack careers into broodmares might be easier than it is for stallions, biologically it is significantly more complex for distaffers to begin their reproductive... Read More


Tips for Stallion Handlers

January 01, 2005

"Starting a novice breeding stallion can range from a quick and easy project accomplished in a few brief sessions to a challenging and time-consuming effort over many sessions and even a few weeks," said Sue McDonnell, PhD, a Certified Applied... Read More


Managing Subfertile Stallions

November 19, 2004

The decision to manage a subfertile stallion non-conventionally is "based on the condition of farm economics or despair, or more appropriately, the last hope before retiring the stallion," said Irwin K.M. Liu, DVM, PhD, a professor in the... Read More


Tips for Stallion Handlers, From Novice to Advanced

November 16, 2004

Even though we think a stallion should know his business in the breeding shed, that is not always the case at the beginning. "Starting a novice breeding stallion can range from a quick and easy project accomplished in a few brief sessions to a... Read More


AAEP 2003: Multiple Ovulations

January 31, 2004

There are three major reasons to attempt to have a mare "superovulate" or ovulate more than one follicle at a time. First, in embryo transfer programs there is a greater chance of recovering an embryo with superovulation, thus reducing the... Read More


Federal Funds to Support Animal Health and Disease Research

February 19, 2003

According to an Associated Press story on, The University of Kentucky (UK) will receive $11.36 million in funding in the current federal budget, U.S. Sen. Mitch McConnell said... Read More


Kentucky Breeding Regulations Amended

February 06, 2002

As was stated Feb. 4 in a news story on this web site, the Kentucky Department of Agriculture filed emergency regulations regarding testing procedures for contagious equine metritis (CEM) to be followed when breeding an imported mare i... Read More


The Young Stallion

October 11, 2001

Envision this: In his first season, the young stallion fulfills his purpose as a breeding animal. He matures from a rambunctious colt into a skillful stud. So how do you make this dream a reality? As the handler, you want the horse to behave... Read More


Restraint Techniques for Breeding

October 08, 2001

When a mare and a stallion meet, love might be in the air...but there's the potential for danger, too. Particularly when humans get in the middle of it all. In our efforts to orchestrate the best possible combinations of... Read More