METHOD FOR PROCESSING OF POULTRY WASTES AND MEAT-AND-FEATHER FLOUR PRODUCED BY METHOD Russian patent published in 2005 - IPC

FIELD: feed production.

SUBSTANCE: method involves providing fermentative hydrolysis of raw material; sterilizing and providing vacuum drying. Ferments for hydrolysis are keratinase and lipase used in the ratio of 1:1. Drying process is provided in the mode of multi-staged regulation of steam supplied into jacket of boiler depending upon changing of moisture content of raw material to be dried. Meat-and-feather flour produced by method includes crude protein, crude cellular tissue, crude fat and mineral substances. Crude protein content is 57.0-62.6 wt%, and total of indispensable amino acids in crude protein is 27.31-34.94 wt%, with the following ratio thereof, wt%: lysine 1.97-2.60; methionine 1.20-2.15; cystine 1.76-2.43; arginine 3.39-4.10; histidine 1.06-1.65; leucine 3.67-4.40; isoleucine 1.97-2.31; phenylalanine 2.18-2.73; tyrosine 1.24-1.70, threonine 2.94-2.95; valine 2.80-3.59; glycine 3.13-4.33.

EFFECT: reduced consumption of steam for drying process, increased yield of ready product from raw material, increased nutritive value and reduced toxicity of meat-and-feather flour.

3 cl, 4 tbl