Electromagnetic biostimulation of zebrafish and chicken embryos

This research investigated the effects of nature-like technologies in the form of weak, wide-band pulsed electromagnetic fields (PEMFs) on embryonic development, aiming to assess their potential for biostimulation and enhanced reproductive efficiency across bi-ological systems. Using Danio rerio (zebrafish) roe and Ross‑308 broiler chicken hatching eggs, the study applied non‑invasive, distant PEMF treatment via the “TOR” device, following the European Convention for the Protection of Vertebrate Animals (ETS No. 123, 1986). In zebrafish, a 5‑minute EMF exposure during mid‑ to late blastula stages (7–9 days) reduced the incidence of abnormalities. During overgrowth (stages 13–17), embryo mortality significantly decreased, and in the pre‑hatching period (stages 31–33) mortality occurred only in the control group at 1260 minutes. In avian embryos, EMF treatment resulted in the highest hatchability rates and increased numbers of healthy chicks with greater average daily weights, while experimental groups showed no weak, crippled, or stunted chicks compared to controls. The study concludes that EMF technology applied to broiler chicken eggs produces effects analogous to those seen in zebrafish eggs, confirming that distant, non‑thermal PEMF treatment opens new prospects for biostimulation and improving reproductive efficiency in diverse biological systems.