The waste waters from some molybdenum ore were discharged into Nanle River and the waters of the river were polluted all the year round. After drinking the water polluted or pasturing the grass beside the river, animals suffered from molybdenosis, which presented with diarrhoea mainly. The incidence of this disease was 18.74%, mortality was 9.41%. The farmer's income for raising these animals was reduced ob- viously. It was indicated, according to more than 1800 measures of 219 samples of 15 breeds, that mo...
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