• experimental
  
• epidemiological
  

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Medical/biological Study (observational study)

Das Verhalten von Milchrindern unter dem Einfluss elektromagnetischer Felder(original article in German). med./biol.

Journal web site

Aim of study (according to author)
To examine the behaviour of cows exposed to a high-frequency electromagnetic field (by antennas on the roofs of stables). Investigations were carried out on 30 milk farms with different levels of irradiation to an electromagnetic field.

Endpoint

• cognitive/behavioural endpoints: behavior of cows

Exposure
General category: digital mobile phone, GSM

Field characteristics	Parameters
900 MHz - 1.8 GHz pulsed (PW) exposure duration: continuous

Exposed system:
animal (species/strain): cow/Rotbunt, Schwarzbunt, Fleckvieh, Braunvieh
whole body exposure

Methods
Endpoint/Measurement parameters/Methodology

• cognitive/behavioural endpoints: lying behaviour; stand and feed behaviour; daily behaviour profile on pasture; ruminating behaviour

Main outcome of study (according to author)
Significant differences were revealed in lying behaviour, daily behaviour profile on pasture and ruminating behaviour, which could be interpreted as the cows' response to these fields. The results could be interpreted as chronic stress and show a biological effect of a high-frequency electromagnetic field.

(Study character: medical/biological study, observational study, full/main study)

Study funded by

• Bayerisches Staatsministerium für Landesentwicklung und Umweltfragen, Germany

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