REVIEW paper: mare reproductive loss syndrome

Veterinary Pathology
M M SebastianLenn R Harrison

Abstract

An epidemic of early fetal loss (EFL), late fetal loss (LFL), fibrinous pericarditis, and unilateral uveitis which occurred during the spring of 2001, are together now known as the mare reproductive loss syndrome (MRLS). A similar epidemic with less intensity was reported during the same period of time from southern Ohio, West Virginia, and Tennessee. The same syndrome with lesser intensity recurred in 2002. The estimated economic loss from the syndrome in 2001 and 2002 together was approximately $500 million. Both EFL and LFL were characterized by the absence of specific clinical signs in aborting mares. Nonhemolytic Streptococcus spp. and Actinobacillus spp. accounted for 65% of the organisms isolated from fetuses submitted for a postmortem during the MRLS period in 2001 and 2002. The pathologic findings in fetoplacental units of LFL included bronchopneumonia and funisitis, and there were no findings in EFL. Epidemiologic studies conducted in 2001 suggested an association between the presences of eastern tent caterpillars (ETC) in pastures with MRLS. Experimental studies in pregnant mares by exposure to ETC, or administration by stomach tube or with feed material, reproduced EFL and LFL. Similar experimental studies in mouse,...Continue Reading

References

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Citations

Aug 22, 2014·BioMed Research International·Margaret C HardyRachel E Allavena
Dec 3, 2014·Journal of the American Veterinary Medical Association·Benjamin Adu-AddaiThomas P Mullaney
Mar 26, 2013·Australian Veterinary Journal·K H TodhunterA P Begg
May 19, 2012·Equine Veterinary Journal. Supplement·A K FooteK E Whitwell
Mar 23, 2011·Australian Veterinary Journal·A E WattsT J Divers
Sep 3, 2014·Australian Veterinary Journal·S K ArmstrongK J Hughes
Mar 13, 2018·Translational Animal Science·Karyn Bischoff, Jennifer Moiseff
Jul 19, 2017·Equine Veterinary Journal·K A Sprayberry, N M Slovis
Mar 27, 2021·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Craig N Carter, Jacqueline L Smith
Dec 4, 2021·Frontiers in Veterinary Science·Jørgen Steen AgerholmMette Christoffersen

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Methods Mentioned

BETA
biopsy
lavage

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