Authors:
M. A. Suzdaltseva,
N. N. Dudkina,
P. O. Busygin,
A. V. Lysov
Ural Federal Agrarian Research Center of the Ural Branch of the Russian Academy of Sciences
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract. Goal: on the basis of the veterinary and laboratory diagnostics department with a testing laboratory, surveillancestudies of fodder of vegetable origin from different manufacturers were carried out for the following indicators:urease activity, mass content of soluble protein. An experiment on the activity of urease in full-fat soybean feed wasalso performed. To assess the quality of heat treatment of soybeans and products of its processing, to analyze thestability of the parameter of urease in fodder soybeans. Methods. These studies were performed in accordance withGOST 13979.9-69; GOST 13979.3-68. Results. As a result of statistical processing, it was revealed that over the pastfive years, urease activity was above the maximum permissible value in 33 % of feed samples. In some samples ofsoybeans, this indicator was exceeded by 2.6 times, in the experimental sample of soybeans – by 5.8 times. It wasalso experimentally confirmed that this indicator is a stable parameter. Additionally, studies of the cumulative masscontent of soluble proteins were conducted in these samples. It was found that in 13 % of soybean samples and itsprocessed products, the result of soluble protein was in the range of 68.20–74.50 %, which indicates excessive heattreatment of this raw material. Based on the results of the research conducted, it was found that this feedstock didnot always meet the stated requirements. In this regard, the conduct of these studies is necessary for further controlof the technological process. Scientific novelty. Currently, the issue of the quality of fodder of vegetable origin andsoybean-processed products remains relevant. Full-fat soybean, soybean extracted meal, soybean expeller meal areincreasingly used for the preparation of animal feed for farm animals and poultry. In this regard, it became necessaryto control the quality and safety of this feedstock.
Keywords: stable parameter, urease activity, soluble protein, heat treatment, quality indicator, safety indicator.
For citation: Suzdaltseva M. A., Dudkina N. N., Busygin P. O., Lysov A. V. Aktivnost’ ureazy v bobakh soi i produktakhikh pererabotki kak pokazatel’ kachestva termicheskoy obrabotki [Urease activity in soy beans and their processingproducts as an indicator of the quality of heat treatment] // Agrarian Bulletin of the Urals. 2021. No. 08 (211).Pp. 28−35. DOI: 10.32417/1997-4868-2021-211-08-28-35. (In Russian.)
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