Booksponsored by the Commission of the European Communities, Directorate General for Agriculture, Coordination of Agricultural Research ; edited by G. Thomas, H.J. Over, U. Vecht, P. Nansen.
Summary: This Community meeting has been organised, since over the past 15 years in different countries of Western Europe including Scandinavia, a lot of research has been directed to the summer mastitis problem. Summer mastitis in cattle is a well known disease which, because of its abruptness and the difficulties concerned in defining the predisposing factors and the pathogens involved, is hard to control. Moreover, as it is anticipated that in the transmission of the bacteria one or more dipterans are involved, the complexity in defining the disease and hence co-ordinating our scientific knowledge in relation to practical control was stimulus enough for this workshop to be organised. Our aims can be summarised in the following goals: 1. Exchange of information in the practical, technical and scientific field in order to stimulate a co-ordinated research approach at a time in which the cattle husbandry sector is under great economical stress. 2. Inform research workers from countries where the disease is or seems to be, not endemic, on aspects that might be of interest for them in the approach of comparable problems. 3. To draw up conclusions and recommendations with regard to future research activities in order to avoid needless duplication of effort.
Contents:
1. Epidemiology of Summer Mastitis
The epidemiology of summer mastitis
Summer mastitis in Irish dairy herds
The occurrence of summer mastitis related to the foraging activities of Hydrotaea irritans (Fall.)
Heifer mastitis in Sweden during a three year period (1982
1985): background and some preliminary data on the incidence of heifer mastitis
The epidemiology of summer mastitis in the Netherlands
Factors contributing to differential risk between heifers in contracting summer mastitis
References
Discussion
2. Bacteriology of the Disease
The bacteriology of summer mastitis
Heifer mastitis in Sweden during a three years period (1982-1985): bacteriological findings in udder secretion from clinical and subclinical cases
The bacteriological constitution of Dutch summer mastitis cases
Gaschromatographic analysis of summer mastitis secretions for the presumptive diagnosis of infections by obligate anaerobic bacteria
Summer mastitis: bacteriological aspects
References
Discussion
3. Aetiology and Pathogenesis
Aetiology and pathogenesis of summer mastitis
Experimental studies in transmission of summer mastitis
A study of the aetiology of summer mastitis using experimental infections
References
Discussion
4. Transmission of the Disease
Cattle flies and the transmission of summer mastitis
Vector biology of flies on grazing cattle in Germany
The fly fauna of heifers and the transmission of summer mastitis in Denmark
Heifer mastitis in Sweden during a three year period (1982
1985): entomological aspects
Chromosome and enzyme variation in Hydrotaea irritans (Fallen) (Diptera: Muscidae)
Bacterial survival and feeding pattern in Hydrotaea irritans: two essential variables for a transmission model of summer mastitis
A culture technique for Hydrotaea irritans
References
Discussion
5. Prevention and Therapy
The prevention and therapy of summer mastitis in Europe
Prevention of summer mastitis by fly control: a field trial with Deltamethrin as pour-on
The ability of insecticidal ear-tags, collars and pour-ons to control flies (Diptera: Muscidae) and to prevent summer mastitis in heifers
Results of the control of flies and summer mastitis by using different pyrethroids and forms of application in Germany
Prevention and therapy of summer mastitis: observations of field outbreaks in the U.K.
Chemical fly control on cattle: risks for the development of resistance
References
Discussion
6. Economics and Ergonomics
Economic and ergonomic implications of summer mastitis
Consequences of summer mastitis on dairy farm productivity
Economic losses associated with summer mastitis in pregnant and non-pregnant heifers
Summer mastitis in Belgium: geographical distribution and economic loss G. Bertels
References
Discussion
7. Conclusions and Recommendations
List of Participants.