To determine the main syndromes associated with toxicosis caused as a result of chronic contamination in dairy cows, toxicological investigation was carried out over a period of one year, establishing the percentage of various diseases.
Toxicological investigation was conducted in parallel with performing laboratory tests (hematology and biochemistry tests), knowing the action that heavy metals have on the entire body; thus Cd can cross the various biological membranes by different mechanisms (e.g metal transporters) and once inside the cells binds to ligands with exceptional affinity (e.g metallothioneins), thereby reducing the absorption of copper and, to a lesser extent, of zinc; for Pb, the US NRC, reported that retarded growth, disturbed iron metabolism, anemia.