УДК 636.2.084
S. A. Yurkovets
Summary The article presents an analysis of the feeding system of highly productive Holsteinized cows during the milking period (the first 100-120 days of lactation) using the example of ZAO Imisskoe. Imbalances in the diets for the main nutrients were revealed, in particular, a deficiency of exchange energy and crude protein. A relationship was established between unbalanced feeding, a decrease in the quality indicators of milk (fat content) and a deterioration in the herd reproduction indicators (extension of the service period, high insemination index). The need to optimize diets to improve the overall efficiency of dairy cattle breeding is substantiated.
Keywords: highly productive cows, milking period, feeding, diet, energy deficiency, protein deficiency, milk productivity, reproduction indicators, economic efficiency.
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