Biological evaluation of the effectiveness of using high-oleic sunflower cake in compound feed production

Abstract

High-oleic oil has been used in the global food industry for more than 10 years. The advantages of this oil include a neutral taste, resistance to thermal effects without

forming carcinogens, peroxides, free radical oxidation, peroxide oxidation, and it can act as an antioxidant, among other benefits. The oxidative stability index of high-oleic sunflower oil is 1.6 to 3.3 times higher than that of linoleic-type sunflower oil and soybean oil. During oil production

using the pressing method, a by-product known as cake is obtained, containing up to 10%, and in some cases, depending on the technology, up to 14% of this oil. Given the above, the use of sunflower cake in feed production is relevant for improving. It was found that in all rats with ED, the MDA content significantly increased: in the oral mucosa by 45% (37.18±0.74 mmol/kg), and in the small intestine by 69% (7.74±0.32 mmol/kg). This indicates a significant increase in lipid peroxidation (LPO) activity in the body under dysbiosis conditions, partly due to decreased catalase activity. In rats that consumed feed containing cake from conventional sunflower seeds, the MDA content in tissues decreased: in the oral mucosa by 37%, in the small intestine by 25%, in the large intestine by 23%, and in the liver

by 15%. In rats fed with high-oleic sunflower seed cake, the MDA content decreased in the oral mucosa by 34% (24.68±1.94 mmol/kg), in the small intestine by 43% (4.42±0.26 mmol/kg), in the large intestine by 40% (4.46±0.49 mmol/kg), and in the liver by 37% (20.77±2.30 mmol/kg), which is significantly more and almost reaches the values of the intact group. Consumption of feed with high-linoleic sunflower seed cake had little effect on the MDA content. In animals fed with high-oleic sunflower seed cake, catalase activity increased compared to those in the group that received conventional sunflower cake, specifically: in the oral mucosa by 7.2% (7.70±0.24 mkat/kg), in the small intestine by 61.5% (3.73±0.11 mkat/kg), in the large intestine by 96.3% (2.16±0.03 mkat/kg), and almost reached the same levels as in group 1 (intact animals). The use of high-oleic sunflower cake in feed production improves its zootechnical efficiency. A reduction in lipid peroxidation in laboratory animals and a decrease in the intensity of inflammatory processes in digestive tract tissues were observed.