Mare Reproductive Loss Syndrome

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Researchers Seeking Best Way to Eliminate Caterpillars

A University of Kentucky entomologist is hoping to soon discover the safest and most effective way to destroy the eastern tent caterpillars believed responsible for the outbreaks of mare reproductive loss syndrome experienced in Kentucky and neighboring states over the last two years.

Bluegrass Blues

Kentucky's leadership role in breeding excellence may be slipping and too many of the state's legislators fail to understand the importance of the state's Thoroughbred industry, how it works, and who it represents.

The Caterpillar Is Innocent

By Jenny Taylor -- The culprit for MRLS was an unseasonable weather-induced pasture change, which caused pregnant mares to have an acute nitrogen overload, and subsequent ammonia-induced abortions.

One More Piece in MRLS Puzzle

Researchers at the University of Kentucky Livestock Disease Diagnostic Center have uncovered one more piece in the puzzle relating to Mare Reproductive Loss Syndrome.

MRLS Monitoring Stepped Up, But No Problem Found

Pathologists at the Kentucky Livestock Disease Diagnostic Center 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, and meetings by the Kentucky Association of Equine Practitioners committee that was formed during the mare reproductive loss syndrome crisis of 2001.

Preliminary Results Find Caterpillars Cause Late-Term Abortions

The University of Kentucky College of Agriculture has released preliminary results from a collaborative project involving the UK Livestock Disease Diagnostic Center, the UK Department of Veterinary Science, and the Hagyard Davidson McGee Equine Hospital. This project investigated the potential of Eastern tent caterpillars (ETC) to cause fetal loss when administered to mares in the late stages of pregnancy.

KTA Sets Meeting for MRLS Loan Applicants

The Kentucky Thoroughbred Association will offer a seminar July 25 to assist breeders in filling out loan applications for funding tied to mare reproductive loss syndrome. The money is available through a federal law enacted in 2001.

Kentucky Clinics Report Slowdown in MRLS Cases

In a letter to state veterinarians, the Kentucky Department of Agriculture reported that no equines brought to area clinics in a 72-hour period that ended the morning of May 16 had symptoms consistent with mare reproductive loss syndrome.

On-Going MRLS Studies Focus on Eastern Tent Caterpillar

A research project begins well before the experiment starts. That was the case of the recently completed collaborative effort at the University of Kentucky that associated the Eastern tent caterpillar and its frass (excrement) and Mare Reproductive Loss Syndrome (MRLS). Work on that project began last fall, even before funding was finalized.

Isolated Cases Consistent with MRLS Identified

A few isolated cases consistent with a diagnosis of Mare Reproductive Loss Syndrome have been identified in the last seven days, said the Kentucky Association of Equine Practitioners at a meeting May 1. The numbers are significantly less than reported for the corresponding period in 2001.

MRLS-Related Advisory Prompted by Forecast

Weather forecasts for the evening of April 24 in Central Kentucky have prompted University of Kentucky scientists to advise farm owners to temporarily restrict horses from eating pasture grass. The advisory is because of mare reproductive loss syndrome (MRLS), which hit at this time last year after an unusual weather pattern.

MRLS Mess

By Ray Paulick -- As live foal reports from The Jockey Club confirm the full impact of last spring's Mare Reproductive Loss Syndrome, the breeding industry continues to be frustrated by uncertainty over the cause of the problem.

2001 U.S. Purses and Handle Set Records

Gross purses rose 3.6% and pari-mutuel handle increased 1.6% in the United States for 2001, setting records in both catagories, according to the 12th edition of "The Jockey Club Fact Book," released online today.

MRLS Meeting Focuses on Communication Network

There may not be answers as to the cause of mare reproductive loss syndrome, but there's certainly a desire for more information. More than 300 people turned out at meeting in Lexington Monday night to exchange information and prepare for the 2002 breeding season.

International Mare Owners Not Worried By MRLS

Preliminary data from the Kentucky Department of Agriculture shows that, following required quarantine and testing of imported horses, approximately 205 overseas Thoroughbred mares were received in the state in 2001 compared with 248 mares 2000. Exact totals will be available in a few weeks.

Herald-Leader Reporter Wins Eclipse Award for Writing

  • News

The National Thoroughbred Racing Association announced Wednesday that Janet Patton, a business writer for the Lexington (Ky.) Herald-Leader, has won the media Eclipse Award for writing in the news/ commentary category.

MRLS Loan Regulations Being Drafted

  • News

Federal and state officials are drafting regulations for federal loans that will be available for eligible farmers impacted by mare reproductive loss syndrome.

Dealing With MRLS on the Farm: No Magic Bullet

Kentucky farm managers and owners are taking steps to prevent the reoccurrence of mare reproductive loss syndrome while fervently hoping last year's devastation was a one-shot deal. There are almost as many theories of what caused MRLS as there are people addressing the problem, so preventative measures differ from farm to farm.

With MRLS Outbreak, 2001 Was Year of Loss For Breeding Industry

The worst health problem to hit the Thoroughbred industry since CEM and EVA occurred during the spring of 2001. What was grouped by the industry under the heading of mare reproductive loss syndrome actually was two reproductive situations. The first was the loss/abortion of late-term or at-term gestations. Some foals were born compromised and later died. The second situation was early fetal loss.

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