Mare Reproductive Loss Syndrome (MRLS)


Chemical Implicated in Causing MRLS

June 26, 2003

A research project has determined that it probably isn't a virus or bacteria (a biological agent) that links the Eastern tent caterpillar (ETC) to mare reproductive loss syndrome (MRLS). Bill Bernard, DVM, Dipl. ACVIM, an internal medicine... Read More


MRLS Agent in or on Caterpillar Exoskeleton

June 10, 2003

The University of Kentucky College of Agriculture last week released the results of a recently completed experiment conducted by the Departments of Veterinary Science (Karen McDowell, MS, PhD) and Entomology (Bruce Webb, MS, PhD, and... Read More


University of Kentucky Pasture Monitoring Interim Report--Comparison of 2002 and 2003

May 29, 2003

Jimmy C. Henning, Assistant Director for Cooperative Extension, Agriculture and Natural Resources, Former Extension Forage Specialist;and Wayne Long, Agriculture Extension Associate, Department of Agronomy, University of Kentucky... Read More


MRLS Workshop Proceedings Available

May 27, 2003

The Kentucky Agricultural Experiment Station has published the scientific papers from the August 2002 workshop on mare reproductive loss syndrome (MRLS convened at the University of Kentucky's Gluck Equine Research Center. This information is... Read More


U.K. Equine Influenza Outbreak Update

May 12, 2003

Since the middle of March, the United Kingdom's Animal Health Trust (AHT) has confirmed influenza in 20 racing yards (stables) in Newmarket, located in different areas of the town, and in a single breaking/holding yard just outside... Read More


Interview from a MRLS Test Farm

May 08, 2003

Some horse and agriculture farms were asked to be test farms during and after the mare reproductive loss (MRLS) crisis in 2001. One of those farms is Glennwood Farm in Versailles, Ky., owned by John D.... Read More


Eastern Tent Caterpillar Update

April 30, 2003

By Lee Townsend, Extension Entomologist
Department of Entomology
University of Kentucky College of Agriculture

Read More


Pasture Management and MRLS

April 07, 2003

In the spring of 2001, hundreds of mares in Central Kentucky lost their pregnancies in peculiar abortions attributed to mare reproductive loss syndrome (MRLS). Since then, horse farm managers have gone back to square one in reviewing their... Read More


Now Is the Time to Control Caterpillars

April 04, 2003

The Grayson-Jockey Club Foundation issued an advisory concerning control methods for Eastern tent caterpillars, which have been linked to mare reproductive loss syndrome (MRLS) in 2001 and 2002.

Dr. Dan Potter, an entomologist at the... Read More


Next Steps Toward Solving MRLS Involve Think Tank

April 02, 2003

Veterinarians and researchers trying to pinpoint the cause of mare reproductive loss syndrome (MRLS) have joined together to create an MRLS "think tank," the progress and goals of which were discussed April 1 at a joint meeting of the Kentucky... Read More


MRLS Research Funded by Kentucky Agriculture Board

March 25, 2003

The equine breeding industry is among the recipients of funds from the Kentucky Agricultural Development Board, which allocated more than $4.3 million for 2003 projects.

The Kentucky Thoroughbred Owners and Breeders received $190,000 to... Read More


Equine Abortions In Kentucky Fall Behind Last Year's Pace

March 10, 2003

The number of reported equine abortions in Kentucky declined for the fourth week in a row, based on figures released by the University of Kentucky's Livestock Disease Diagnostic Center (LDDC) on Monday. The... Read More


Central Kentucky Abortions Down For Third Straight Week

March 07, 2003

Reported equine abortions in Central Kentucky are down for the third week in a row and overall abortions for 2003 are drawing even with the 2002 numbers. According to figures from the University of Kentucky's Livestock Disease Diagnostic Center... 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


"Fact Book" Details Effects of MRLS in Kentucky, Other Industry Numbers

February 14, 2003

The number of mares bred in Kentucky in 2002--the year after mare reproductive loss syndrome first hit--fell by 3.4% from 2001, but the state's broodmare population remains 33% higher than it was a decade earlier, according to figures released b... Read More


Results of Farm Survey To Determine Autumn Fetal Loss Risk Factors

February 11, 2003

Results of a survey of central Kentucky horse farms has provided information on possible risk factors associated with increased fetal losses during early and late autumn 2002. The survey was conducted by the University of Kentucky Department of... Read More


2002 Fall Fetal Loss Syndrome

February 07, 2003

The results of a survey conducted by the University of Kentucky's Gluck Equine Research Center and College of Agriculture showed that a small number of Thoroughbred and other farms experienced an unusual increase in what is being termed fal... Read More


Pasture Monitoring In Kentucky

February 01, 2003

A week following the Dec. 23 release of information about the University of Kentucky's pasture monitoring related to mare reproductive loss syndrome (MRLS), Jimmy Henning, PhD, extension forage specialist at the University of Kentucky (UK)... Read More


The MRLS Mystery

February 01, 2003

MRLS touched us all, and some more than others; it broke not only the spirit, but the purse strings of many farms. We accumulated information on risk factors--from weather patterns, to host plants, to unusual insect populations, to time allowed expos... Read More


Wanted: ETC Egg Masses

January 31, 2003

The University of Kentucky’s College of Agriculture is seeking Eastern tent caterpillar (ETC) egg masses from the Central Kentucky area. Egg masses that are viable will be partly or completely covered with a brownish coating and will not have... Read More


Caterpillar Control

January 31, 2003

Because of the proposed link of the Eastern tent caterpillar (ETC) and mare reproductive loss syndrome (MRLS), the Grayson/Jockey Club Research Foundation and the University of Kentucky held an informational session earlier today (Jan. 31) on... Read More


Kentucky Industry Working On Computerized System To Spot Equine Health Problems

January 31, 2003

The Kentucky Thoroughbred Association (KTA) is working in conjunction with the University of Kentucky, horsemen, and veterinarians to develop a computer program that would help the equine industry detect health problems like mare reproductive... 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


Caterpillar Research Discussion Set for Jan. 31

January 28, 2003

A discussion of work being performed to help eradicate Eastern tent caterpillars will be held at the Fasig-Tipton Kentucky sale pavilion in Lexington, Ky., at 9 a.m. on Jan. 31.

University of Kentucky entomologist Dan Potter and his staf... Read More


Determining Precise Link Between Tent Caterpillar and MRLS is Continuing Priority for Equine Industry

January 15, 2003

Leading Kentucky equine industry groups recently brought together 31 veterinarians and scientists for a "Think Tank" meeting to further the industry's knowledge about preventing future occurrences of mare reproductive loss syndrome (MRLS).... Read More