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[Abortions in cows caused by Corynebacterium pyogenes]
Veterinarno-Meditsinski Nauki
|January 1, 1982
Summary
Corynebacterium pyogenes is a primary cause of bovine abortions, endometritis, and mastitis. This bacterium was frequently isolated from aborted fetuses, placentae, and uterine samples, highlighting its role as a significant infectious agent in cattle.
Area of Science:
- Veterinary Microbiology
- Bovine Reproductive Diseases
- Infectious Disease Epidemiology
Background:
- Bovine abortions, endometritis, and mastitis are significant concerns in cattle farming.
- Understanding the causative agents is crucial for disease prevention and control.
Purpose of the Study:
- To identify the prevalence and role of Corynebacterium pyogenes in bovine reproductive failures and associated conditions.
- To determine the significance of Corynebacterium pyogenes as an infectious agent in cattle.
Main Methods:
- Bacteriologic investigations were conducted on samples from aborted embryos, fetuses, placentae, and uterine and milk samples from cows with endometritis and mastitis.
- Bull semen samples were also analyzed for the presence of Corynebacterium pyogenes.
- Isolation and identification of the bacterium were performed.
Main Results:
- Corynebacterium pyogenes was identified as the most frequent occasionally pathogenic microflora associated with bovine abortions.
- The organism was isolated from 9.2% of fetuses, 5.3% of embryos, and 8.1% of placentae.
- Corynebacterium pyogenes was also found in uterine secretions of clinically normal cows and in bull semen, indicating its persistence and widespread presence.
Conclusions:
- Corynebacterium pyogenes is a primary causative agent of abortions, endometritis, and mastitis in cows.
- The bacterium's long viability makes it a persistent and serious source of infection in cattle herds.
- Effective control strategies targeting Corynebacterium pyogenes are essential for managing reproductive losses and other associated diseases in cattle.