中国西部牧区牦牛的铜缺乏症
Copper deficiency in yaks on pasture in western China.
作者信息
Shen Xiao-yun, Du Guo-zhen, Chen Ya-ming, Fan Bao-li
机构信息
State Key Laboratory of Arid Agroecology, Lanzhou University, The People's Republic of China.
出版信息
Can Vet J. 2006 Sep;47(9):902-6.
The clinical signs of a disorder in yaks (Bos grunniens), known locally as "swayback ailment," in the Qing Hai-Tibetan Plateau are described. The purpose of this study is to investigate the possibility that swayback ailment is iron (Fe)-induced copper (Cu) deficiency. The mean concentrations of Cu in soil and forage from affected areas and unaffected areas are similar and within the normal ranges. The mean concentrations of Cu in blood and hair from the affected yaks was significantly lower (P < 0.01) than that in unaffected yaks. The mean concentrations of Fe in soil and forage were significantly higher (P < 0.01) in affected than in unaffected areas. Affected yaks showed a hypochromic microcytic anemia and a low level of ceruloplasmin. Oral administration of copper sulphate prevented and cured the disease. We conclude that "swayback disorder" of yaks is caused by secondary Cu deficiency, mainly due to the high Fe content in forage.
本文描述了青藏高原牦牛（Bos grunniens）一种当地称为“晃背病”的病症的临床症状。本研究的目的是调查晃背病是否由铁（Fe）诱导的铜（Cu）缺乏引起。受影响地区和未受影响地区土壤和草料中的铜平均浓度相似且在正常范围内。患病牦牛血液和毛发中的铜平均浓度显著低于（P < 0.01）未患病牦牛。受影响地区土壤和草料中的铁平均浓度显著高于（P < 0.01）未受影响地区。患病牦牛表现为低色素小细胞性贫血和血浆铜蓝蛋白水平降低。口服硫酸铜可预防和治愈该病。我们得出结论，牦牛的“晃背病”是由继发性铜缺乏引起的，主要是由于草料中铁含量过高。
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