Successful development of poultry farming requires the creation of a fodder base. When developing an economically and physiologically appropriate diet for poultry, it is necessary to take into account the high demand for protein and amino acids. The addition of animal protein (meat-and-bone meal, feather meal) makes it possible to significantly improve the balance of feeds in terms of amino acids such as lysine, methionine, methionine + cystine, tryptophan, threonine, arginine, etc. Feeds of animal origin are rich in protein, minerals and vitamins. No vegetable protein can replace protein of animal origin in terms of balanced amino acid composition.
Since the majority of enterprises process all poultry slaughter waste for the production of feed additives without sorting by type of waste (feathers, down feathers, fluffy feathers, heads, legs, refuse, bones, lungs, kidneys) there is a problem with digestibility of the resulting feed additive. The low digestibility of fodder flour of animal origin (FFAO) is associated with poor digestibility of keratin, the main component of feather-and-fluff waste. To eliminate such consequences, many enterprises completely refuse the processing of feathers and fluff.
However, feathers contain 85% keratin – a protein, which is perfectly balanced in terms of amino acid composition. Keratin is a rich source of sulphur-containing amino acids – cystine and methionine, which are the main limiting amino acids for the development of poultry. In particular, methionine serves not only as a source of sulphur, but also participates in the regulation of fat and protein metabolism, participates in the biosynthesis of serine, cystine, choline; prevents fatty degeneration of the liver; is a necessary component for the growth and reproduction of red blood cells. But a distinctive property of this protein is its complex structure with a huge amount of disulphide bonds of amino acid residues of methionine and cystine between peptide chains of protein, which makes it practically indigestible in the digestive tract of poultry and other productive animals. Certain technological solutions are required to break down the keratin molecule into separate peptide chains accessible to the action of proteolytic enzymes of the digestive system of poultry.
Existing traditional methods for the production of meat-and-bone and feather meal from poultry slaughter waste are associated with significant energy consumption levels due to the necessity to maintain high temperature and pressure. Furthermore, the resulting fodder product has poor quality with a high content of unprocessed keratin-containing waste. It is a well-known fact that heat treatment of meat-and-bone raw materials results in a loss of proteins, a number of critical amino acids, including the essential ones. Sulphur-containing amino acids are almost completely destroyed.
An advantageous alternative to traditional methods for obtaining feed meal of animal origin is enzymatic hydrolysis of poultry slaughter waste by means of KERATAZIM® technology.
KERATAZIM enzymatic hydrolysis is a simplified method for complex processing of poultry slaughter waste without preliminary sorting, which does not involve high energy consumption and enables the manufacture of a high quality product.
Technical and economic advantages of KERATAZIM low-temperature enzymatic hydrolysis technology:
KERATAZIM® low-temperature hydrolysis technology is a source of high-quality feed protein.