Environmental Endocrine Disrupting Chemicals, Centro Stefano Franscini, Monte Verita, Ascona, Switzerland,

The oestrogenic activity of human colostrum (Lacassagne & Nyka, 1934) and the undoubted importance of colostrum for the neo-natal calf led us to test bovine colostrum for oestrogenic activity. Oestrogens found in animal tissues and body fluids during the past 23 years, in particular those in pregnant-cow bile (Pearlman, Rakoff, Cantarow & Paschkis, 1947), have always been phenolic in chemical n...

The oestrogenic activity of certain cultivars of subterranean clover (Trifolium subterraneum, L.) first became known through the observation of serious infertility in ewes in the early 1940's in Western Australia (Bennetts, Underwood and Shier-1946). The manifestations in commercial flocks of the syndrome "clover disease" have been dealt with in the preceding paper (Lightfoot 1974). The deleter...