Abstract
Fifteen mares which had each lost their pregnancies 2 to 8 times during the preceding 6 years were used in a study comprising 1 or 2 breeding seasons for each mare. During the research period all 15 mares conceived and 10 of the mares had normal pregnancies in the 1st experimental year. Five mares resorbed/aborted once or twice during the 1st year. This was followed by a pregnancy that terminated in a live foal.
Histopathological examinations of uterine biopsies showed a wide range of histopathological conditions, from absence of changes excessive for the mare’s age and parity to the most severe changes of the endometrium. Most likely, endometritis, acute as well as chronic degenerative endometritis, is the most common cause of early foetal death in the mare.
Good breeding management is essential and was often enough to make the mares produce a foal. Additional treatment was needed in some of the mares and was based on the course of the conceptus loss and the condition of the endometrium, as determined by clinical, histological, bacteriological and cytological examinations.
Sammanfattning
Vid histopatologisk undersökning av endometriet återfanns hela skalan från en normal slemhinna till mycket kraftiga förändringar. Endometrit, akut såväl som kronisk degenerativ, utgör med stör sannolikhet en av de viktigaste orsakerna tili tidig fosterdöd hos sto.
Skötselfaktorer är av stor vikt för att undvika tidig fosterdöd. God skötsel innebär att stona hålls i god näringsbalans, betäcks få gånger nära ägglossning under den sexuella säsongen, att man söker undvika stressfaktorer, att akut endometrit diagnostice-ras och behandlas före betäckning samt att preventiva åtgärder vidtages mot förnyad endometrit hos infektionskänsliga ston.
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Darenius, K. Early Foetal Death in the Mare. Acta Vet Scand 33, 147–160 (1992). https://doi.org/10.1186/BF03547321
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DOI: https://doi.org/10.1186/BF03547321