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Endometritis is a localized inflammation of the uterine lining occurring 21 days or more post-calving. Uterine infections arising earlier in the transition period are classified as metritis, which can readily progress into endometritis if left unresolved. The condition manifests in two distinct forms, clinical (chronic) and subclinical, with a fluid continuum between the two. Both forms severely impair reproductive performance, leading to prolonged days open and increased culling for infertility.
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Hygiene during and after calving plays a critical role in prevention. The birth process carries an elevated risk of infection, which escalates when obstetric care or housing conditions lack cleanliness. Beyond sanitation, a compromised immune system, metabolic stress, or uterine trauma from difficult births and stillbirths directly predispose cows to endometritis. Delayed uterine involution and incomplete self-clearing create ideal opportunities for opportunistic bacteria to colonize the reproductive tract.
Subclinical endometritis cannot be seen from the cow itself and is only detected through internal examinations or diagnostic methods, whereas clinical endometritis is clearly visible:
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