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Medical/biological study (observational study)

[Behaviour of dairy cows under the influence of electromagnetic fields]

Das Verhalten von Milchrindern unter dem Einfluss elektromagnetischer Felder

Published in: Prakt Tierarzt 2002; 83 (3): 260-267

Aim of study (acc. 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

Exposure

    • mobile communications
    • GSM
Exposure Parameters
Exposure 1: 900 MHz–1.8 GHz
Modulation type: pulsed
Exposure duration: continuous
-
General information
Frequency range stated here is the normal freqency range of GSM and is not mentioned in the article.
Exposure 1
Main characteristics
Frequency 900 MHz–1.8 GHz
Exposure duration continuous
Additional info Wuschek, M: Untersuchung zum Einfluss elektromagnetischer Felder von Mobilfunkkanlagen auf Gesundheit, Leistung und Verhalten von Rindern. Teil 3- Feldexposition. In: Bayerisches Staatsministerium für Landesentwicklung und Unweltfragen (Hesg): Umwelt und Entwicklung. Materialien 158. StMLU, Muenchen.
Modulation
Modulation type pulsed
Exposure setup
Exposure source
Additional info The lying-, standing-, eating, roaming and cud-chewing behaviour of different sorts of cows were observed. Observations were carried out on 29 dairy farms in the province of Bavaria and Hesse with respect to different lavel of electromagnetic exposure. All cows were kept in stanchion stables during winter. From May till November cows were observed on the pastures (8 farms).
Parameters
No parameters are specified for this exposure.
Additional parameter details
Please see reference article for details on exposure parameters.
Exposed system:
  • animal
  • cow/Rotbunt, Schwarzbunt, Fleckvieh, Braunvieh
  • whole body

Methods Endpoint/measurement parameters/methodology

Investigated material:
Time of investigation:
  • during exposure

Main outcome of study (acc. 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:

Study funded by

  • Bayerisches Staatsministerium für Landesentwicklung und Umweltfragen, Germany

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