Mare Reproductive Loss Syndrome (MRLS)

Subcategories:
None

Time to Assess Eastern Tent Caterpillar Populations

Eastern tent caterpillars (ETC) were identified as the cause of foal loss during the mare reproductive loss syndrome outbreaks in 1999-2001. Over the last three years, ETC populations in Central Kentucky have been increasing gradually but there are

Read More

Eastern Tent Caterpillar Egg Hatch Under Way

Experts report that Eastern tent caterpillar eggs have begun hatching in Central Kentucky, just as leaf buds are swelling on wild cherry trees. While it is too early to tell what 2011 caterpillar numbers will be, populations have been increasing

Read More

New Knowledge Comes Through New Research

Our current understanding of the epidemiology, pathology, bacteriology, immunology, toxicology, and clinical aspects of MRLS has come through scientific research conducted over the last nine years.

Read More

MRLS Foal Losses in Kentucky Increased Slightly in 2009

Between May 5 and June 15, the Livestock Disease Diagnostic Center (LDDC) diagnosed 13 foal loss cases caused by mare reproductive loss syndrome (MRLS) in Central Kentucky. This number was up slightly from 2003-2008 when only three to five cases were reported each breeding season.

Read More

Mare Reproductive Loss Syndrome Update

An abortigenic disease known as mare reproductive loss syndrome (MRLS ) significantly impacted the horse industry in the Ohio Valley in late April and early May, 2001 and 2002. In 2001, approximately 25% of all pregnant mares aborted within several

Read More

MRLS: Caterpillar Population Up Sharply from 2007

Experts with the University of Kentucky (UK) report that Eastern tent caterpillars are now wandering in the area, and population levels are among the highest they’ve seen since the 2001, when mare reproductive loss syndrome (MRLS) hit Central

Read More

MRLS: Tent Caterpillars Hatch in Central Kentucky

Experts have reported that Eastern tent caterpillars are developing normally this spring and have just completed the egg hatch stage. Controlling the caterpillars is vital to area horse farms, as University of Kentucky research has strongly linked

Read More

MRLS: Eastern and Forest Tent Caterpillars Currently Feeding


The time is right for horse farms to implement control strategies. University of Kentucky experts report that eastern tent caterpillars and forest tent caterpillars are developing normally this spring with egg hatching complete and

Read More

MRLS Cases Confirmed in New Jersey

A horse farm in Northern New Jersey experienced high abortion rates in early June in pastures where there was an abundance of Eastern tent caterpillars.

Samples from those aborted fetuses were sent to the University of Kentucky’s Livestock

Read More

Researchers Contemplate Role of Vesiviruses in MRLS

Oregon State University (OSU) researchers announced last month that they linked vesiviruses to abortions seen during Central Kentucky’s bout with mare reproductive loss syndrome in 2001 and concluded that vesivirus-specific reagents should be

Read More

MRLS and Vesiviruses?

Oregon State University (OSU) researchers announced on June 23 that they linked vesiviruses to abortions seen during Central Kentucky’s bout with mare reproductive loss syndrome (MRLS) in 2001 and concluded that vesivirus-specific reagents shoul

Read More

MRLS Cases in New Jersey

A farm in Northern New Jersey experienced high abortion rates in early June in fields where there were Eastern tent caterpillars. Samples from those aborted fetuses were sent to the University of Kentucky’s Livestock Disease Diagnostic Center fo

Read More

One Kentucky MRLS Case

The University of Kentucky?s Livestock Disease Diagnostic Center (LDDC) has reported one confirmed case of mare reproductive loss syndrome (MRLS) this year. The case was from a farm in Boyle County that reported to have caterpillars at that time

Read More

Vesiviruses and MRLS?

Oregon State University researchers have reported a link between vesiviruses, which can affect a wide variety of mammals, and mare reproductive loss syndrome (MRLS). University of Kentucky researchers studying MRLS are concerned the results of

Read More

Florida Farms on Alert in Wake of Confirmed MRLS Case

About 200 people gathered at an April 6 meeting at the Ocala Breeders’ Sales Co. pavilion in Ocala, Fla., for an update on mare reproductive loss syndrome (MRLS). The syndrome is believed to be responsible for at least three equine deaths in

Read More

More From The Horse

Equine Acupuncture
Bacterial and Fungal Skin Infections
horses-grazing-in-tall-grass
Horses Eating Hay, Round bale

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from TheHorse.com

Weekly Poll

sponsored by:

How do you try to promote healthy joints in your horse? Select all that apply.
131 votes · 256 answers

Readers’ Most Popular

Create a free account with TheHorse.com!