Summer Mastitis

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.- Aculture 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.