The use of a new type of food resource in the diets of chickens of the parent flock of the Hisex Brown cross

Purpose. The study of the productive traits of chickens when fed sunflower polysaccharide extract (hereinafter referred to as SPE), which can activate protein and carbohydrate metabolism, stimulate the body's natural defense factors. Materials and Мethods. The studies were carried out in a certified laboratory using classical and modern zootechnical, biochemical and other methods. Laboratory hematological studies were carried out on automatic biochemical analyzers URIT-800Vet and URIT-3020 (China) in the complex analytical laboratory of VRIMMP (Volgograd, Russia). The obtained results were processed using the software, calculation of the mean (M), standard errors of the mean (±SEM) and determination of the Student-Fisher test for the significance of the difference. Results. In I-III experimental groups, an increase in the yield of hatching eggs was recorded, respectively, by 88, 239 and 149 pcs. relative to the control, the intensity of egg production of hens – by 0.65; 1.35 and 0.77%, feed conversion per unit of egg mass – by 0.03; 0.07 and 0.05 kg. There has been a steady trend towards an increase in the mass of eggs in the experimental groups by 0.27 (0.43%); 0.81 (1.29%) and 0.63 g (1.01%), the acid number of the yolk decreased by 8.01 relative to the control; 9.42 (P≤0.05) and 10.29% (P≤0.05), which suggests the presence of antioxidant properties of PPE. The use of the studied additive had a positive effect on the morphological composition of the blood of laying hens of the experimental groups: the content of erythrocytes increased by 15.41 (P≤0.05), 17.47 (P≤0.05) and 17.81% (P≤0, 05), hematocrit – by 5.57 (P≤0.05); 10.22 (P≤0.01) and 11.15% (P≤0.01), hemoglobin – by 6.25 (P≤0.05), 8.67 (P≤0.05) and 9.19 % (P≤0.05) against the background of the control. In laying hens of the experimental groups, an increase in AST activity by 4.86 was recorded; 15.89 and 10.79 u/l, with a decrease in ALT activity by 0.70; 1.37 and 1.25 u/l. A significant increase in glucose in the blood serum of laying hens of the experimental groups was recorded in comparison with the control group by 15.26 (P≤0.05); 23.66 (P≤0.01) and 25.51% (P≤0.01), lactic acid level and glycogen content respectively by 15.26 (P≤0.05); 25.06 (P≤0.01); 25.51% (P≤0.01) and 2.19 (P≤0.05); 3.77 (P≤0.01) and 3.86% (P≤0.01). The bactericidal activity of blood serum of chickens of I-III experimental groups exceeded the control group by 5.02 (P≤0.05); 5.51 (P≤0.05) and 5.70% (P≤0.05 ), lysozyme activity – by 12.31 (P≤0.05); 15.89 (P≤0.01) and 16.36% (P≤0.01), phagocytic activity of leukocytes – by 3.06 (P≤0.05); 4.63 (P≤0.01) and 4.79% (P≤0.01), respectively. Conclusion. The results obtained confirm the activation of metabolic processes in the body of chickens of all experimental groups, under the influence of PPE, however, the studied additive at a dosage of 5.0% in the diet structure had the greatest efficiency in the production of hatching eggs.