Published online by Cambridge University Press: 27 February 2018
The symptoms of trace element deficiency arise from the combined effects of the different lesions provoked within the animal body. Since a variety of different lesions have been described, many of which affect inter-related systems, it is not surprising that diverse symptoms may arise even from the one trace element deficiency; nor that similar symptoms may be caused by deficiencies of different trace elements. The major effects of trace element deficiencies on body functions have been outlined in Table 3.2.1 (from Underwood, 1980).