Humic acids from leonardite and their use in broiler poultry farming

Abstract

The production of domestic healthy food products depends on solving the problem of the use of feed additives in poultry diets, allowing not only to balance the diet, but also to ensure the safety of the products obtained. In this regard, one of the ways to solve it is the use of humic acids from leonardite in poultry feeding. The purpose of the work was to provide scientifi c and practical justifi cation for the use of humic acids from leonardite in broiler poultry farming. The studies used a dry feed additive based on unmodified microporous humic acids from leonardite, produced under the brand Reasil® Humic Health. Reasil® Humic Health feed additive consists of high-molecular humic acids obtained from natural raw materials as leonardite and is a brown powder with a dry matter content of at least 80 % and humic acids 80–90 % in dry matter. A liquid water-soluble feed additive produced under the Reasil® Humic Vet trademark was used for drinking by broilers during the period of scientifi c research. Liquid feed additive is a 10 % solution of high molecular weight sodium salts of humic acids from leonardite and at least 15,0 % dry matter in solution. The optimal norms for introducing feed additives based on humic acids from leonardite in dry and liquid form into the diet of broiler chickens are 1,5 g of Reasil® Humic Health per 1,0 kg of compound feed and 0,5 ml of Reasil® Humic Vet” per 1,0 liter of water. It was found that the introduction of Reasil® Humic Health dry feed additive into the broiler diet increased the digestibility of crude protein by 2,14 abs.%, crude fat by 1,23 abs.%, crude fiber by 5,25 abs.%. The amount of using of nitrogen increased by 2,01 abs.%, calcium by 2,59 abs.%, and phosphorus by 3,09 abs.%. The use of Reasil® Humic Vet liquid feed additive in broiler drinking increased the digestibility of crude protein by 2,43 abs.%, crude fat by 1,48 abs.% and crude fi ber by 1,31 abs.%. The digestibility of nitrogen increased by 3,10 abs.%, calcium by 2,73 abs.% and phosphorus by 1,96 abs.%.