Kontrazeptive Wirkung von Cadmium bei Legehennen

Accumulation of Trace Elements and Organochlorines by Surf Scoters Wintering in the Pacific Northwest

“…Dietary CdCl2 did not cause significant body weight loss or decreased food consumption in experimental adult mallards fed up to 200 ppm (wet wt) for 90 days ; however, body weights of young chicks fed 75 ppm of cadmium decreased significantly after 3 weeks (Freeland and Cousins 1973), as did the body weights of young Japanese quail (Coturnix coturnix) fed 75 ppm for 6 weeks (Richardson et al 1974). In chickens, dietary cadmium at 60 ppm suppressed egg production (Sell 1975), and 100 to 200 ppm eliminated egg production (Hennig et al 1968). The inverse relationship of body weight to cadmium suggests that the surf scoter is a sensitive species; further research is required to determine the implications of our findings.…”