В двух племенных хозяйствах проводили комплексную диспансеризацию высокопродуктивных молочных коров голландской, черно-пестрой и холмогорской пород в связи с бесплодием. Выявили нарушения метаболизма витамина А, белкового, углеводного, липид-ного, фосфорно-калъциевогр обмена, функции печени, ацидоз вследствие несбалансированности рационов по питательным веществам и использования кормов низкого качества.
In two pedigree farms the complex clinical examination of high productive milk cows of the Holland, Black-and-White and Kholmogorskaya breeds was realized in connection with infecundity for the purpose of revelation of disturbances in metabolism of vitamin A, protein, carbohydrate, lipid, phosphor-calcium metabolism, acidosis, function of liver as a result of imbalance of rations on nutritious substances and the use of poor quality forage. The science-based transfer of cows to rations balanced on nutritious substances and sugar/protein ratio, feeding of qualitative forage permit to remove the chronic subclinical changes in metabolism of vitamin A, carbohydrate, lipid, protein and phosphor-calcium metabolism, to normalize an acid-base equilibrium, function of liver and to reduce the infecundity.