FIELD: biotechnology, medicine, cosmetology. SUBSTANCE: connective tissue of animals is milled, hydrolyzed with alkali, homogenized and extracted with perchloric acid at pH = 1.5-2.5 at room temperature. Extract is filtered off, precipitate is washed, dried and used as fodder addition. The end product from extract is isolated by dialysis against distilled water. Precipitate is formed on diaphragm after dialysis, dialyzate pH is 6.5-6.0. Precipitate is separated and fed to drying. The yield of preparation is 3.5-7.0%. Complex preparation has 30-39% mucopolysaccharides and 60-65% collagen. EFFECT: simplified method, decreased cost. 3 cl
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