Features of the absorption of nutrients and chemical elements by gobies when the protease enzyme is included in the diet

Relevance. Nutrients in feed affect animal maintenance, growth and reproduction. Deficiencies of essential nutrients in feed are usually compensated by additives. Among such additives, proteases are widely used. Proteases facilitate more efficient breakdown of feed proteins into amino acids that are then easily digested by the body, which is especially important for young animals that need sufficient amino acids to support intensive growth. Optimising amino acid digestion by proteases can lead to improved feed utilisation efficiency, increased weight gains and better overall health of steers. In addition, it may reduce dependence on expensive protein supplements in the diet.

The aim of the study was to study the peculiarities of amino acid absorption by bullheads when protease is included in the diet.

Materials and methods. Objects of the study: rumen fluid (RF), chyme and faeces of steers of the Kazakh white-headed breed.

Results. Analysis of the results showed that the introduction of proteases (fungal and bacterial) promotes better absorption of amino acids in the body of bulls. Bacterial protease (group II) showed the greatest activity, which is confirmed by the data of increase in assimilation of lysine (by 12,5%), phenylalanine (by 12,3%), tyrosine (by 9,2%), serine (by 8,9%), threonine (by 8,8%), alanine (by 8,1%), isoleucine and glycine (by 7,6%), valine (by 5,9%), proline (by 2,3%) and arginine (by 2,9%), relative to the control group.

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