Analysis of the usefulness of the mineral composition of diets and the effectiveness of the use of mineral and vitamin supplements in the diets of cows of different technological groups

The paper presents the results of analysis usefulness mineral composition diets and effectiveness use vitamin supplements in feeding cows different technological groups. showed that amount calcium phosphorus was close to norm. Extremely high concentrations elements such as magnesium, potassium sodium were noted with an obvious lack chlorine sulfur. cation-anion balance positive: range indicators ranged from 14.98 23.49 a tendency increase this indicator by end lactation revealed. ratio phosphorus, well did not exceed established norms. For most trace elements, excess recommended norms determined, which can be justified due low digestibility body cows.