Abstract

Biologically active additives of natural origin have become increasingly interesting in recent years. These include humic acid preparations. Biologically active feed additives "Reasl," produced by Life Force LLC from humic acids based on leonardite, combine the properties of enterosorbent of mycotoxins and pesticide residues, immunostimulator and anthogonist of pathogenic flora, stimulator of protein biosynthesis and muscle mass growth. The purpose of the experiment was to study the efficiency of using the feed additive "Reasil ® Humic Health," consisting of high molecular weight sodium salts of humic acids from Leonardite, in the composition of feedstuffs for broiler chickens. The chickens of the first control group were prepared with the main diet a full-diet combination feed, which consisted of corn grains, wheat, extruded soybean, sunflower cake, sunflower oil, meat-bone flour, monocalcium phosphate and premix. For the chicks, 1.2 and 3 test groups were added to the feed further with a "Reasil ® Humic Health" feed additive in an amount of 1.0, 1.5 and 2.0 g per kg of feed, respectively. During the whole period of the experiment, the average living mass of one chicken in the control group increased by 2293 ± 30.93 g, which is 84.17 g less than in the 1st experimental group. Increasing the supply of the feed supplement "Reasil®Humic Health" to 1.5 g/kg of feed stock increased the absolute increase in living weight in the third group by 172.25 g. A further increase in the amount of supplement to 2 g/kg of feed stock did not have a further stimulating effect on the increase in live weight of chickens, compared with the previous level. However, the difference with the control was 150.05 g or 6.56%. The results of the weighing and calculations showed that the relative increase in the live weight of broiler chickens was higher in the 2nd test group and amounted to 185.69%, which is 1.11% higher compared to the control group. Thus, the addition of 1.5 g/kg of feedstuff to the feedstuff of "Reasil®Humic Health" provided for the growing of heavier poultry and confirmed its usefulness in poultry farming.

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