The content of trace elements in the blood of calves that received feed additives based on their chelated complex compounds and inorganic salts

We have proposed liquid feed additives, which are solutions of substances that can react with each other to form complex compounds of different composition. The dynamic equilibrium is established in the solution. If the pH changes and one complex compound decomposes, a new one is formed immediately. As a result, the trace element metal ions are chelated at a very wide range of pH values. The effectiveness of the use of solutions of chelated complex compounds and solutions of inorganic salts of copper, zinc, iron, cobalt and manganese was compared. These fluids were administered orally to two experimental groups of calves for 30 days according to a fractional-periodic scheme. Another (control) group received distilled water. The content of these trace elements in the blood of animals was evaluated. The fractional-periodic scheme of administration was used to reduce the influence of physiological antagonism and synergy of trace elements on the results of the experiment. It was shown that in calves from the experimental groups, the content of copper, zinc, iron, cobalt and manganese in the blood was significantly higher than in the control group. At the same time, calves that received solutions of complex compounds of metals-trace elements had a higher content in their blood compared to animals that received solutions of inorganic salts.