Study type: Medical/biological study (experimental study)

Effects of Low-Frequency Magnetic Fields on Different Parameters of Embryo of Gallus Domesticus. med./bio.

Published in: Electromagn Biol Med 2005; 24 (1): 55-62

Aim of study (acc. to author)

To contribute data on the possible action exerted by magnetic fields on embryonic development by studying their effects on the body weight and cranial/cephalic development of the chick embryo.

Background/further details

Fertilized eggs were incubated and the parameters were studied at 15 and 21 days of incubation.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 50 Hz
Exposure duration: continuous for 15 or 21 days
Exposure 2: 50 Hz
Exposure duration: continuous for 15 or 21 days
Exposure 3: 50 Hz
Exposure duration: continuous for 15 or 21 days

General information

Fertilized eggs were divided into 3 groups exposure groups and 1 control group of 80 eggs each.

Exposure 1

Main characteristics
Frequency 50 Hz
Type
Waveform
  • unspecified
Exposure duration continuous for 15 or 21 days
Exposure setup
Exposure source
Setup Eggs were incubated in a model 65 incubator maintained at 37°C with 60-70% relative humidity.
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 1 µT unspecified measured - -

Exposure 2

Main characteristics
Frequency 50 Hz
Type
Waveform
  • unspecified
Exposure duration continuous for 15 or 21 days
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 500 µT unspecified measured - -

Exposure 3

Main characteristics
Frequency 50 Hz
Type
Waveform
  • unspecified
Exposure duration continuous for 15 or 21 days
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 1 mT unspecified measured - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

At 15 days of incubation: body weight was significantly lower versus controls in all exposed embryos; the transverse cranial diameter was increased versus controls at all intensities used except for 1 mT; the vertical diameter was greater versus controls in all embryos exposed to 1 mT, whereas it was smaller in those exposed to 1 µT or 0.5 mT.
At 21 days of incubation: the body weight and cranial diameters of exposed embryos were all smaller versus controls, with a significance that depended on the intensity of the magnetic field. There were no differences in brain weight between exposed and control embryos, either at 15 or 21 days of incubation.
These results support the hypothesis that magnetic fields may affect embryonic development.

Study character:

Study funded by

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