Abortion and Embryonic Death


WNV and Kentucky Abortions?

February 05, 2003

A question has been raised whether the increased number of West Nile virus (WNV) cases in Kentucky in late summer and fall 2002 contributed to a rise in fall abortions. A retrospective study by the University of Kentucky’s Livestock Disease and... Read More


KAEP Statement Regarding Kentucky Abortions

February 03, 2003

The statement below was released Feb. 2 by the Kentucky Association of Equine Practitioners.

“Due to the increased surveillance of any equine abortions in the past two years, the Lexington Disease and Diagnostic Center (LDDC) has... Read More


No Live Foal Guarantees

February 01, 2003

Subconsciously, you've been holding your breath for months. From the moment your mare was confirmed in foal, it's been a tense waiting game. And although she will be foaling soon, you know a healthy foal is still anything but a given. Between... Read More


Abortions Up In Central Kentucky; Signs Not Consistent With MRLS

January 31, 2003

The abortion rate in Central Kentucky is up from a year ago, but scientists aren't sure why there has been an increase.

"At this time, there is nothing that is fully consistent with MRLS (mare reproductive loss syndrome)," said Dr. Lenn... Read More


Kentucky Abortions Update

December 18, 2002

The “blip” of abortions seen in August, September, and October in Kentucky has continued on through December. With only about 50 total abortions reported, this problem might not even catch the attention of many people in a normal year, as... Read More


Luteal Insufficiency in the Mare

November 08, 2002

Insufficient function of the corpus luteum (the structure formed after the follicle that releases the egg, or ovulates, and then produces progesterone) has been proposed as a mechanism for early embryonic loss in the mare, but until now there... Read More


Fall Abortions in Kentucky

October 28, 2002

Pathologists at the Kentucky Livestock Disease Diagnostic Center (LDDC) in Lexington noticed that a few more fetal losses were being seen than was usual during August, September, and October. That prompted increased surveillance and reporting,... Read More


Caterpillars Cause Late-Term Abortions

July 16, 2002

The University of Kentucky (UK) College of Agriculture today is releasing preliminary results from a collaborative project involving the UK Livestock Disease Diagnostic Center (Drs. Lenn Harrison, Manu Sebastian, and Deborah Williams), UK... Read More


Does Ultrasound Give Clues to Abortion Cause?

July 16, 2002

Hagyard-Davidson-McGee veterinary associates worked with the University of Kentucky (UK)he latest project that has associated Eastern tent caterpillars (ETC) and mare reproductive loss syndrome (MRLS). Drs. Nathan Slovis and Thomas Seahorn, both... Read More


New Discoveries in MRLS Research

July 16, 2002

Four interesting facts were brought to light because of the late-term abortion and Eastern tent caterpillar (ETC) study that was recently completed at the University of Kentucky (UK), according to Dr. Thomas Tobin of the Gluck Equine Research... Read More


Oxytocin and Maternal Recognition of Pregnancy

October 03, 2001

A research report from the laboratory at the Gluck Equine Research Center at the University of Kentucky noted that it is well-established that early conceptus loss (the embryo and its... Read More


Embryo Transfer for Horses

September 18, 2001

One plus one plus one equals one. The stallion, dam, and surrogate dam probably never met, but all three contributed to produce a foal. Today's assisted breeding technologies can overcome the constraints of distance, competitive involvement,... Read More


Untimely End--Early Embryonic Death

April 01, 2001

Breeding horses can be both exhilarating and devastating. Wrapped up in the process are hopes, dreams, and visions of future greatness and glory. The hopes and dreams begin with the selection of a stallion for your special mare. You assess her... Read More


The Trouble With Twins

March 01, 2001

Breeders should endeavor to remove one of the twin embryos early in pregnancy.... Read More


False Pregnancy

August 01, 2000

It is a frustrating condition. Even though a mare is not pregnant, her body tells her that she is, and all of her reproductive systems react accordingly. She does not come into heat, and her body begins preparations for housing and nourishing a... Read More


Fescue Toxicosis And Treatment

July 01, 2000

When tall fescue first arrived in the United States during the 1940s, it was considered a wonder grass. It was easy to establish, it yielded a good amount of forage, it was tolerant of a wide range of management regimens, and it could handle a... Read More


University Of Pennsylvania To Identify Causes Of Abortion And Pregnancy Wastage In Study

January 08, 1999

Researchers at the University of Pennsylvania School of Veterinary Medicine received funding from the Pennsylvania Department of Agriculture for a three year study to identify the causes of abortion and pregnancy wastage in... Read More


Fetal Development and Foal Growth

January 01, 1999

Foals born to mares which do not receive proper nourishment during gestation could be born weak.... Read More


Leptospirosis in Horses

October 01, 1998

Acute leptospirosis in horses is characterized by fever of 103-105° Fahrenheit for two to three days, depressi... Read More


Oxytocin And Maternal Recognition Of Pregnancy In Mares

January 09, 1998

It is well established that early conceptus loss (the embryo and its associated extra-embryonic membranes) is a major source of reproductive inefficiency in domestic animals. Early pregnancy in all mammals is characterized by a high fertilizatio... Read More


Monitoring Fetal Well-Being

October 01, 1997

Fetal monitoring in horses is similar to the methods used for humans -- ultrasound, EKG machines, and blood tests on unborns all are part of monitoring the health of the fetus. Advances in these areas for equines have allowed for... Read More


Equine Herpes Virus

September 01, 1997

The first thought that comes to most people when the word "herpes" is mentioned is one of those nagging pain-in-the-neck cold sores, one type of which is caused by a herpes virus, and the venereal disease "herpes simplex." The word "herpes"... Read More


Barren Mares

June 01, 1997

For a successful domestic species, the fertility rate of the horse is surprisingly low. Coupled with an 11-month gestation period and a single offspring per year, producing a foal is a significant investment for any breeder. So, if you're... Read More


Endophyte-Infested Fescue: Hidden Dangers

March 01, 1997

Horse breeders noticed that they were having foaling problems with some mares which were grazing fescue grass or being fed fescue hay. Cattle producers reported that steers on fescue pastures or being fed fescue hay appeared to be unthrifty and that ... Read More



February 01, 1996

Congratulations, you have successfully bred your mare. But do you have time to sit back, catch your breath, and wait eleven months for the foal? Unfortunately not. You might have cleared the first hurdle, but the obstacle course has just begun.... Read More