Incidence of hypocupraemia in cattle in northern Uruguay and its alleviation with an injected Cu-Phenylalanine complex

Our results show that the copper content in grass was under adequate levels most part of the year, and the deficiency was more critical in autumn. Although the molybdenum and sulphur levels were low enough not to expect them to interfere in copper absorption, the Mo content may be enhancing the copper deficiency.