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isf, it Menu probable that there < Is some relationship.
For example, it ia posaible that cobalt deficiency may make animala more ausceptible to paraaitea; and that enough cobalt may help them resist parasites. Field studies indicate, Dr. Threlkeld reports, that lambs with cobalt deficiency seldom recover from an infestation of parasites; while those with enough cobalt in their diet are able, with the aid of medical treatment, to make recovery.
He is how studying four groups of lambs. One is parasite-free and one on a cobalt deficiency diet. A second is on the same diet and has parasites. A third is on a normal diet and has parasites. And a fourth is on the same normal diet» and is parasite-free. Other minor elements, such as copper, sulfur, and molybdenum, will be similarly used in the diets of parasitised and parasite-free lembs.
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