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Bovine mycotic abortion: some epidemiological aspects.
The Veterinary Record
|April 30, 1977
Summary
Bovine mycotic abortion incidence peaked in winter months, with Aspergillus infections declining. Cattle fed hay in cowsheds showed a significantly higher abortion rate, highlighting management system impacts.
Area of Science:
- Veterinary Medicine
- Mycology
- Epidemiology
Background:
- Bovine mycotic abortion is a significant reproductive issue in cattle.
- Understanding incidence patterns and risk factors is crucial for prevention.
Purpose of the Study:
- To analyze the incidence and climate-related factors of bovine mycotic abortion.
- To identify specific fungal types and management systems associated with increased risk.
Main Methods:
- Retrospective analysis of 898 bovine mycotic abortion cases from 1969-1974 in South Wales.
- Examination of seasonal incidence, fungal type trends (Aspergillus, Mucor), and management systems (hay-fed cattle in cowsheds).
Main Results:
- Mean incidence was lowest in September and highest in January/February.
- Aspergillus-type infections decreased, while Mucor-type remained stable.
- Cattle fed hay in cowsheds exhibited a markedly higher abortion rate.
- No correlation found between June/September rainfall and subsequent abortions.
Conclusions:
- Bovine mycotic abortion incidence shows seasonal variation, peaking in winter.
- Cowshed hay feeding is a significant risk factor for mycotic abortion.
- Fungal abortion does not appear to permanently impair subsequent fertility.