Development of an Extrusion Technology for Pressed Sugar Beet Pulp with Dry Feed Components

Yazykbayev Y. Iztayev A. Kulazhanov T. Yakiyayeva M.
31 December 2025 Unique Scientific Publishers

International Journal of Agriculture and Biosciences
2025 #14 Issue 6 1456 - 1464 pp.

A persistent challenge for Kazakhstan’s compound feed industry is the disproportionately high reliance on grain-based inputs, which constitute approximately 60–80% of feed formulations. By contrast, in Western Europe this share typically does not exceed 12–15%, largely due to the broader incorporation of food-industry by-products. A major by-product of Kazakhstan’s food industry is sugar beet pulp. Raw beet pulp has a moisture content of up to 93% and a shelf life of only three days. As a result, it is typically pressed and then dried using energy-intensive technologies, particularly drum dryers powered by natural gas. This study aims to develop an extrusion technology for combining pressed sugar beet pulp with feed components, enabling the replacement of imported dry beet pulp with domestically produced pressed pulp. The core concept of the research is the utilisation of pressed sugar beet pulp as a moisture-retaining agent during extrusion, using dry feed components as the sorbent. The cost of extruding pressed sugar beet pulp with dry feed components is three times lower than the cost of producing dry beet pulp using a natural gas-powered drum dryer. This study confirms that the extrusion process remains stable under the following conditions: inclusion of up to 10% pressed beet pulp with a moisture content of 65%–74%; an extrusion temperature of 80– 165°C; and a screw rotation speed of 500 rpm. The practical significance of this research lies in reducing the production cost of compound feed.

Compound feed , Extrusion , Peas , Rye , Sugar beet pulp

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