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近些年来对微量元素的研究有很大进展,从多方面证实了自然环境中某种或某些微量元素的过多或缺乏,都可能引起人或家畜发生地方病。早在1935年就有关于黑龙江省克山县发生克山病的报导,而家畜的白肌病(畜禽硒—维生素E缺乏综合症)又相继在1936年发现。目前已知黑龙江省共有的75个市、县中,划为不同程度克山病区的竟达64个,仅余11个属于非克山病区,是国内克山病最严重的省份。另据不完全统计,我省白肌病的主要病区约有40
In recent years, great progresses have been made in the research of trace elements. In many aspects, it is confirmed that excessive or lack of certain trace elements in the natural environment may cause endemic diseases in humans or livestock. As early as 1935, there was a report about Keshan disease in Keshan County, Heilongjiang Province, and white muscle disease (livestock selenium-vitamin E deficiency syndrome) in livestock was successively discovered in 1936. Currently, 75 cities and counties in Heilongjiang Province are known to have been classified as 64 Keshan Ward to varying degrees. Only 11 of them belong to the non-Keshan Ward, which is the most serious province in China. According to incomplete statistics, the main ward of white muscle disease in our province is about 40