Oldfield J E
Nutrition Research Institute, Oregon State University, Corvallis 97331-6702.
Biol Trace Elem Res. 1989 Apr-May;20(1-2):23-9. doi: 10.1007/BF02919095.
White muscle disease and other selenium deficiency syndromes, once extremely common in young calves and lambs in Oregon, especially in the areas of volcanic origin east of the Cascade mountain range, prompted extensive investigations in the Oregon Agricultural Experiment Station that resulted in the implementation of large-scale selenium supplementation programs. Although selenium deficiency in livestock is consequently now rare in Oregon, selenium-deficient soils and attendant selenium deficiency conditions have been reported near the Kesterson Wildlife Refuge in the Northern part of the San Joaquin Valley, California, where, paradoxically, selenium toxicity in wildfowl, nesting near evaporation ponds, occurred and attracted wide attention. This review cites studies which explain why there is no evidence of selenium toxicity in livestock, but some selenium deficiency on the east side of the San Joaquin Valley. They also show that there is no threat to the food supply owing to excessive selenium in this area and that the consumption of meat and milk from the herds would not exceed the safe range of selenium for humans.
白肌病和其他硒缺乏综合征，曾在俄勒冈州的幼犊和羔羊中极为常见，尤其是在喀斯喀特山脉以东的火山起源地区，这促使俄勒冈农业试验站进行了广泛调查，最终实施了大规模的硒补充计划。尽管如今在俄勒冈州，牲畜的硒缺乏情况已较为罕见，但在加利福尼亚州圣华金谷北部的凯斯特森野生动物保护区附近，已报告存在缺硒土壤及随之而来的硒缺乏状况，而矛盾的是，在那里靠近蒸发池筑巢的野禽出现了硒中毒现象，并引起了广泛关注。本综述引用了一些研究，这些研究解释了为何没有证据表明在圣华金谷东侧的牲畜存在硒中毒现象，但却存在一些硒缺乏情况。它们还表明，该地区不存在因硒过量而对食物供应构成威胁的情况，并且该地区畜群的肉和奶的消费量不会超过人类安全的硒摄入量范围。
