الكاتب: Multiple References

Calcium, phosphorus and magnesium ions play very important role in the metabolism of animal body tissues. Animals are often affected by disorders of mineral metabolism when the balance between intake and excretion of macronutrients is disturbed. The requirements for normal levels of mineral elements for agricultural animals differ in different countries. These requirements depend not only on the breed of animal climatie conditions, stocking intensity and node of digestion, but also on unknown factors that might ameliorate and / or inhibit incorporation of these elements (Correa et d. 1993; Ebbesvik, 1993). The incidence and economic impact of metabolic diseases are a leading factor in internal pathology of cows in Lithuania. Approximately 19 000 cattle per year are affected by metabolic diseases in Lithuania.