The effect of feeding the feed additive "Prinarovskaya" on the body of laying hens

Abstract

The aim of the conducted studies was a comprehensive assessment of the clinical and physiological state of laying hens, which included a fish feed additive (DCR) in the main diet. The composition of the new Prinarovskaya DKR includes chilled river fish, its processed products and grain products (wheat bran). The additive preparation process goes through several stages: grinding, cavitation heating and subsequent drying of the resulting mixture. The investigated additive is a homogeneous dry mass and contains a number of amino acids, vitamins and minerals in its composition. DKR "Prinarovskaya" was fed to laying hens of the Lohmann Lsn-Classic breed of 130 days of age. All chickens participating in the experiment were divided into 4 groups. Chickens of the 1st experimental group included 8 g of "Prinarovskaya" additives per 100 g of the main diet; chickens of the 2nd experimental group - 6 g of additives to OR; chickens of the 3rd experimental group – 4 g of additives to OR; 4-control group of chickens were fed only OR – compound feed PK1-1G-1227, prepared in accordance with GOST R 51851-2001. The usefulness of poultry feeding is reflected in the morphological and biochemical parameters of blood, which served as the basis for using them in an experiment to characterize metabolic processes and assess the state of the body of laying hens. An important indicator of the effect of the new feed additive "Prinarovskaya" on metabolic processes was the determination of the concentration of total protein and the main protein fractions (albumins, globulins). The state of lipid metabolism in terms of cholesterol and triglycerides was analyzed. Indicators of carbohydrate metabolism and the functional state of the liver were also studied. To characterize the mineral metabolism, the level of calcium and phosphorus in the blood serum was determined. The conducted study with a comprehensive assessment of morphological and biochemical parameters of blood confirmed the expediency of including Prinarovskaya DCR in the diet of laying hens, which generally has a positive effect on the state of their body.