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Updated: Jun 6, 2026
14:53
Bovine Mammary Gland Biopsy Techniques
Published on: December 23, 2018
Bovine subclinical mastitis caused by Mannheimia granulomatis
Shlomo Blum1, Mor Freed, Nona Zukin
1Department of Clinical Bacteriology and Mycology, The Kimron Veterinary Institute, PO Box 39, Bet Dagan 50250, Israel.
Summary
Mannheimia granulomatis caused a self-limiting udder infection in a cow over 10 months. Researchers characterized the bacteria
Area of Science:
- Veterinary microbiology
- Bovine mastitis research
Background:
- Bovine mastitis is a significant economic concern in dairy herds.
- Mannheimia granulomatis is an emerging pathogen associated with bovine mastitis.
Purpose of the Study:
- To isolate and characterize Mannheimia granulomatis from a naturally infected dairy cow.
- To investigate the clinical course and microbiological features of M. granulomatis infection.
Main Methods:
- Bacterial isolation from milk samples over a 10-month period.
- Phenotypic characterization of the isolate.
- Molecular identification and analysis of the isolate.
Main Results:
- Mannheimia granulomatis was successfully isolated from the cow's milk for 10 months.
- The infection was observed to be self-limiting.
- Detailed phenotypic and molecular data of the M. granulomatis isolate were obtained.
Conclusions:
- Mannheimia granulomatis can cause a persistent, yet self-limiting, udder infection in dairy cows.
- This study provides valuable phenotypic and molecular data for understanding M. granulomatis pathogenesis.
- Further research is warranted to assess the prevalence and impact of M. granulomatis in dairy cattle.
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