Cows salivary cortisol levels were measured on 17 dairy farms in Bavaria under exposure to radiofrequency electromagnetic fields of mobile phone networks.
Data are intended to give an impression of the stress situation of the animals (via cortisol secretion). The investigation differentiated between low-exposure and high-exposure farms. Five cows per farm were treated intravenously with adrenocorticotropic hormone. By means of saliva samples a cortisol profile over four hours was then determined.
Under chronic stress situation the adrenal cortex activity is increased. Therefore, the organism response to a exogenous stressor (stimulated via ACTH administration) by an increase of the peripheral cortisol level.
900 MHz–1.8 GHz
Modulation type: pulsed
Exposure duration: continuous
|Frequency||900 MHz–1.8 GHz|
|Additional info||17 Bavarian dairy farms were investigated. The cows were divided into 4 groups: Group A and B served as exposure groups and C and D as control groups. Group A was under the highest exposure conditions whereas group D was under the lowest.|
|electric field strength||160 mV/m||maximum||measured||-||-|
Highly exposed cows had a higher and more sustained cortisol level than animals with exposure of a lower level. Therefore it is concluded that cows with prolonged exposure to radiofrequency electromagnetic fields are chronically stressed. This could lead to a higher susceptibility to diseases.