Any ideas...My friend has now lost 4 full term foals/ a couple born dead and now a couple born but died within 3 days of birth. Before the rain the foals born were surviving okay but now nothing. the vet was called and they apparently have ruled out the fescue and Rhino ( even though she doesnt vaccinate for anything ;((( and her hay doesnt appear to be the best of quality- they run their horses like one sometimes sees in a cattle operation) I have wondered if perhaps on some if this could be an RH factor/ They havent to date sent the bag etc to the university for testing. These are young mares with no prior history of abortions or delivery of dead foals. I know this has a lot of gaps in management but perhaps someone knows of perhaps what this could be. oh, these mares have been pulled from pasture 3 months prior to due dates and are in a separate lot. susan
Without necropsies on cannot determine what the cause could be - there are so many possibilities. The chances of them all being neonatal isoerythrolysis - or even two of them - is pretty remote though. My bet would be more inclined towards something like neonatal septicaemia, or even multiple factors.
After twenty years of a nearly perfect foaling record (10 mares breeding yearly, two early gestation losses and one full term loss at birth) we ruined our record with nearly 100% loss for three years in a row of full term/late babies.
We had necropsies done, we had titers of all kinds of normal things done. We tested the livers for selenium (too high or low) and endophyte poisoning.
The ONLY thing we did different was
1) Changed our hay to orchard grass K-31
2) Gave West Nile Vaccines
Since then we have had trouble conceiving although have had three live foals in two years... we did go back to alfalfa/timothy mix or straight timothy again.
We also found that some of the E- fescues, ryes and other grasses were actually 30% infected in our state (Oregon).
again this year things look bad.
We are now testing for Ehrlichiosis (not the same strain as PHF, but another strain which is common in dogs, spread through water and biting vectors, and has 'jumped species'. This has been the cause of two foal losses at this point and also is accompanied in the mare by edema or small papules/lesions which have a yellowish hue to them, as well as joint inflammation with a yellowish serum.
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