Effect of exposure to operant-controlled microwaves on certain blood and immunological parameters in the young chick
1991
Braithwaite, L.A. | Morrison, W.D. | Bate, L. | Otten, L. | Hunter, B. | Pei, D.C.T.
Twenty-two 1-wk-old broiler chicks (Gallus domesticus) were housed at 16 C and operantly conditioned to activate either a 250-W infrared bulb (control) or a microwave generator delivering 13 mW/cm2 (treated). Plasma corticosterone concentration did not differ between groups (P>.05) at 4 wk of age. At that time the birds were killed, and post-mortem examination revealed no treatment differences in gross morphology of the chicks or in weights of spleen and bursa of Fabricius (P>.05). Histological study of comparable segments of spleen bursa, adrenal, and thyroid tissue did not show differences in any of the chosen parameters (P>.05). Heterophil:lymphocyte ratios, packed cell volume, and total plasma protein content were similar between groups (P>.05). These results suggest that operant exposure to low density microwave radiation did not result in stress or immunological disturbances.
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