الكاتب: Multiple References

Trace element salts in solution are generally strongly caustic and produce abscesses in the injection site. Copper per os dosing is efficient for treating deficient animals (Lamand et al., 1969). Blackmon et al. (1967) consider this type of treatment adequate for treating zinc deficiencies as well. However trace element should be provided every day for at least ten days and this treatment is time consuming. Therefore we tried to perfect a copper and zinc deficiency treatment allowing the injection of enough trace element, by an easy route (intramuscular) without detrimental inflammation or shock or pain and effective for a period sufficient to limit the treatment to one injection.