Copper is an essential component of several functions in animal metabolism. Ruminat Cu deficiency is endemic in regions throughout the world, specially when the pasture are rich in molybdenum. Cu, Mo and sulphur could combine in the rumen to form an unabsorbable triple complex nominated copper thiomolybdate (Cu-TMs). The important physiological effects of Cu-TMs is to restrict the availability of Cu for ceruloplasmin synthesis. Ruminant animals, especially sheep, are much more susceptible to Cu:Mo imbalance than are nonruminant animals because of the sulfide generating bacteria in the rumen. The effects of a particular level of dietary Cu are also greatly influenced by the ratio of this copper to dietary Mo and sulphate.
copper; molybdenum; sulphur; thiomolybdates