Abstract: Disclosed is a composition for treating acute gastrointestinal disturbances in animals, comprising lignin, hydrocellulose and mineral substances at the following ratio of said components in percent by mass:______________________________________ lignin 38 to 78 hydrocellulose 20 to 60 mineral substances 1 to 3 ______________________________________Disclosed also is a method for treating acute gastrointestinal disturbances in animals with application of the composition of the invention, wherein said composition in the form of 4-6% water suspension is administered orally to the animal in the amount of from 0.2 to 0.5 g/kg of the body weight per one administration as converted to dry substance, 2-4 times a day from 30 to 60 minutes prior to feeding.

Abstract: The process according to the invention comprises submerged cultivation of microorganisms producing an amino acid in a nutrient media including nitrogen, mineral salts and a source of carbon - a mixture of hexose and pentose monosaccharides obtained by percolation hydrolysis of cellulose-containing plant raw materials, purified to remove furfural and containing oxymethyl furfural and lignogummin substances in an amount of 1-3% by weight of the monosaccharides.The advantage of the process according to the invention resides in the abundance and low cost of the carbon source, reduction of the number of production steps, the presence of a mixture of monosaccharides stimulating the growth of microorganisms in the solution and improvement of quality of the end product.