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Defining postpartum uterine disease in cattle
I Martin Sheldon1, Gregory S Lewis, Stephen LeBlanc
1Department of Veterinary Clinical Sciences, Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hatfield AL9 7TA, UK. sheldon@rvc.ac.uk
Theriogenology
|October 18, 2005
Summary
This study provides precise clinical definitions for common postpartum uterine diseases in cattle, including puerperal metritis, clinical and subclinical endometritis, and pyometra. These standardized definitions aim to improve research accuracy and veterinary diagnosis of bovine uterine health and infertility.
Area of Science:
- Veterinary Medicine
- Reproductive Biology
- Bovine Health
Background:
- Postpartum bacterial contamination of the uterine lumen frequently compromises uterine function in cattle.
- Persistent pathogenic bacteria lead to uterine disease, a primary cause of infertility in cattle.
- Existing definitions of bovine uterine disease lack precision and vary among research groups.
Purpose of the Study:
- To establish clear, standardized clinical definitions for common postpartum uterine diseases in cattle.
- To provide definitions that can be adopted by researchers and veterinarians for consistent diagnosis and study.
- To address the ambiguity in current characterizations of bovine uterine disease.
Main Methods:
- Clinical examination of uterine size and discharge characteristics (fetid, watery, red-brown, purulent, mucopurulent).
- Assessment of systemic illness signs (milk yield, dullness, toxemia) and fever.
- Uterine cytology to determine neutrophil percentages at specific postpartum intervals.
- Evaluation of cervical patency and presence of a corpus luteum for pyometra diagnosis.
Main Results:
- Puerperal metritis: enlarged uterus, fetid watery red-brown discharge, systemic illness, fever (>39.5°C) within 21 days postpartum.
- Clinical metritis: enlarged uterus, purulent discharge within 21 days postpartum, without systemic illness.
- Clinical endometritis: purulent discharge ≥21 days postpartum, or mucopurulent discharge ≥26 days postpartum.
- Subclinical endometritis: >18% neutrophils (21-33 days postpartum) or >10% neutrophils (34-47 days postpartum).
- Pyometra: purulent material in the uterus with a persistent corpus luteum and closed cervix.
Conclusions:
- Proposed definitions for puerperal metritis, clinical and subclinical endometritis, and pyometra offer clarity and consistency.
- Adoption of these definitions by researchers and veterinarians will enhance the study and management of bovine postpartum uterine diseases.
- Standardized definitions are crucial for accurate diagnosis, effective treatment, and improved reproductive performance in cattle.