Influence of Continuous Electromagnetic Fields on the Stage, Weight and Stature of the Chick Embryo

Piera, Verónica; Rodriguez, Adriana Pinheiro Martinelli; Cobos, Alberto; Torrente, Miguel; Cobos, Pedro L.

doi:10.1159/000147382

Cited by 9 publications

(5 citation statements)

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“…The stage of embryos exposed to SEMF of 18 and 36 mT was more advanced than that of controls. This result is very similar to those of Duriez and Bassett [1980] who used field intensities of 10 and 50 mT and it coincides with previous results by Piera et al [1992]. It may suggest that one of the main mechanisms involved in development, differentiation, is sensitive to SEMF action.…”

Section: Discussionsupporting

confidence: 92%

“…The center of the coil was a hollow cylinder 110 mm in diameter and 160 mm in length. The solenoid was connected to a power supply (Promax FAC-5528, Spain) located outside the incubators and an SEMF was obtained (frequency = 0; wavelength = 0) as previously described [Piera et al, 1992;Espinar et al, 1997]. The intensity of SEMF could be controlled between 0 and 40 mT.…”

Section: Semf Exposure Systemmentioning

confidence: 99%

“…A review of the literature shows that many results differ because the approaches adopted in various studies are not homogeneous [Barnothy, 1963;Veneziano, 1965;Delgado et al, 1982;Maffeo et al, 1984;Berman et al, 1990;Piera et al, 1992]. The intrinsic variability of the electromagnetic field applied (static or pulsed), the way in which they are generated, the length of exposure and the intensity are all factors that lead to different results.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Static Electromagnetic Fields on Chick Embryo Pineal Gland Development

Jové

Torrente

Gilabert

et al. 1999

Cells Tissues Organs

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The effects of static electromagnetic fields on the development of the chick embryo pineal gland were studied. A total of 144 fertilized White Leghorn eggs were sacrificed after 5, 10 and 15 days of incubation. The stage of development was determined in all embryos using the Hamburger and Hamilton method [J Morphol 49: 88–92, 1951]. The various morphometric parameters (diameter and distance of the pineal gland and its lumen) were measured on serial 7-μm-thick sections. The data were obtained in a morphometer and processed statistically. The intensities of the static electromagnetic fields were 18 and 36 mT. Control and exposed embryos were equally distributed and randomly assigned. After 5 days of incubation, 25% of embryos exposed to a static electromagnetic field of 18 mT had a more advanced stage of development than controls and embryos exposed to 36 mT. On the 10th and 15th day, embryos exposed to either 18 or 36 mT tended to be more developed than controls. In the morphometric study, results were similar for the controls and exposed embryos after 5 and 10 days of incubation. However, the values of the 15-day-old embryos exposed to static magnetic fields were lower than the values of the controls (p > 0.01). These differences were more pronounced in the embryos exposed to 36 mT. These results seem to indicate that static electromagnetic fields affect the development and growth of embryos unequally, and that their action can depend not only on the intensity of the static electromagnetic field, but also on the length of exposure and the organ which is developing. It may be interesting to use these data in ultrastructural and physiological studies.

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Section: Discussionsupporting

confidence: 92%

Section: Semf Exposure Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Static Electromagnetic Fields on Chick Embryo Pineal Gland Development

Jové

Torrente

Gilabert

et al. 1999

Cells Tissues Organs

View full text Add to dashboard Cite

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“…Recently,Younis and Qasim [17] reported substantial increase in hatchability and live BW until 42 days of age when Ross 308 broiler breeders' eggs were exposed to 1800 Gauss MF for 30, 60, and 90 min. Also,Pieraet al (1992) [35]reported that continuous exposure to MF increased embryos weight at 15-d of age which might explain at least in part the significant increase of BW at hatch by increasing the dose of MF in the current research. The mechanisms of the positive impacts of MF on hatchability and BW at hatch might be due to the changes occurred in the physical characteristics of egg water in response to MF exposure.…”

Section: Hatchability and Bw At Hatchmentioning

confidence: 55%

Impact of Short Term Exposure of Japanese Quail Eggs to Magnetic Field on Eggshell Thickness, Hatchability and Body Weight at hatch

Sobhy

siam²,

Hozayn³

et al. 2022

Egypt. J. Chem.

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Two experiments with a total of 1260 Japanese Quail eggs were conducted to study the impact of short term exposure to magnetic field (MF) on eggshell thickness, hatchability and body weight at one-day of age (BW). In the first experiment, a pilot study to identify the best treatments to be tested in the second experiment, 360 eggs in 2 ways-ANOVA with interaction design were divided randomly into 15 equal groups (3 replicates of 8 eggs per each group). Eggs were exposed to 3 intensities of MF (0, 750 and 1500Gauss)and 5 durations of exposure (5, 10, 15, 20 and 25 min) before incubation. Results indicated that, no significant effects of interaction between MF dose and duration of exposure was observed for eggshell thickness and BW at hatch. The highest hatchability rate was noted for treatment of 750 Gauss/20 min followed by 1500 Gauss/10 min ones. In addition, a linear effect was detected for BW in inconsiderable response to MF intensities (750Gauss) . In the second experiment, one-way ANOVA was performed using 900 eggs. Eggs were divided randomly into 3 equal treatments (0, 750 Gauss/20 min and 1500 Gauss/10 min) with 10replicates per each treatment (30 eggs per replicate). Results confirmed that both treatments (750Gauss/20 min and 1500 Gauss/10 min) had the same positive impact on hatchability and BW at hatch in compared with control ones. It might be concluded from this study that MF had no effect on eggshell thickness. However, it had positive impacts on hatchability and BW at hatch of Japanese quail. Therefore, it is recommended for breeders to implement in their hatcheries the most effective and efficient treatment, which is either 750 Gauss/20 min or 1500 Gauss/10min.

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“…1993). Piera and Cobos (1992) of Spain conducted a study on how EMF effected the developmental rate of chicken embryos.…”

Section: Emfmentioning

confidence: 99%

Mutagenic Potential of Alternating Current Electric Fields.

Obringer¹,

Horne²,

Kelchner³

1997

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Public reporing burden for fts coie¢uon of infornnson ;-7" rT'.ad to average 1 hour per response, including the dmo for reviewing insonutons, seorching existing data bources, gathering and oaintaining te data needed, ad coeplfoing and reviewing the collection of infwrnation. Sewd cornnentz regarding dhi burden esurnats or any other aspect of dhi collectio of infornmtiop, including suggestons for reducing tis burden, to Washington Headquarters Services, Directorate for Infortnaon Operations asd Reports, 1215 Jefferson Davit Highway, Suite 1204, Arlington, VA 22202-4302, and to the Office of Maosgewent and Budget, Paperwork Reducion Project (0704.0188), Washington, DC 20503.

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Influence of Continuous Electromagnetic Fields on the Stage, Weight and Stature of the Chick Embryo

Cited by 9 publications

References 0 publications

Effects of Static Electromagnetic Fields on Chick Embryo Pineal Gland Development

Effects of Static Electromagnetic Fields on Chick Embryo Pineal Gland Development

Impact of Short Term Exposure of Japanese Quail Eggs to Magnetic Field on Eggshell Thickness, Hatchability and Body Weight at hatch

Mutagenic Potential of Alternating Current Electric Fields.

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