Moscow, Russian Federation
One of the main reasons for the deterioration of feed quality is the inferiority of its amino acid composi-tion. In order to assess the usefulness of the amino acid composition of feeds obtained from perennial cereal pastures drained by closed drainage, created on sod-podzolic medium loamy soil with low humus content and medium phosphorus and potassium, studies were conducted at the Federal Williams Research Center of Forage Production and Agroecology. The amino acid composition of pasture feed protein was determined in hydrochloric acid hydrolysates using amino acid analyzers "Chromospec" and "Chemispek" in accordance with GOST 32195-2013 "Feed, compound feed. A method for determining the content of amino acids". In field and lysimetric experiments, the most effective, environmentally safe level of nutrition of long-term pasture grass was established, at which the yield was obtained in the amount of 90.3 c/ha of dry weight, and in conditions of bilateral regulation of the water regime of the soil — 104.3 c/ha. The protein of the pasture feed obtained in our studies contained the optimal amount of lysine. This is also typical for other essential amino acids, the content of which was sufficient in conditions of rational nutrition and hydration of perennial pasture. The limiting amino acids in the protein of the studied pasture feed were methionine and cystine.
field and lysimetric experiments, amino acid composition of protein, pasture feed
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