Effectiveness of using mixed ligand complexes of Zinc, Manganese and Cobalt in feeding dry stable cows
The purpose of the investigation was to determine the optimal dose of mixed ligand complexes of zinc, manganese, and cobalt in the ration of dry stable cows in the first and second dry periods.To cover the deficiency of Zinc, Manganese and Cobalt, different levels of mixed ligand complexes of Zinc, Manganese and Cobalt were introduced into the prem