Ю. В. Килякова To fully realise the genetic potential of broilers and increase productivity in poultry farming, metal particles in nanoform have been applied as biologically active feed additives. These additives optimise metabolism, help prevent hypovitaminosis, and activate immune responses. This scientific study assessed the biological effect of the Zn-C nanocomposite on the growth, morphological, and biochemical blood parameters of broiler chickens. The addition of the Zn-C nanocomposite at a minimal dosage (0.2 ppm) promoted higher growth intensity during feeding – the bird mass was 5.4% greater than that of the control group. Zinc in nanoform, as a feed additive, also had a positive effect on the morphobiochemical blood parameters of broiler chickens. The leukogram of broiler chickens in the experimental groups showed a noticeable increase in the number of neutrophils, eosinophils, and lymphocytes relative to the total number of white blood cells. The number of erythrocytes and haemoglobin was lower than in the control group in the experimental groups, but the mean corpuscular haemoglobin and mean corpuscular haemoglobin concentration were higher than in the control. Biochemical analysis of the blood serum of broiler chickens revealed increased activity of alanine aminotransferase and aspartate aminotransferase enzymes. A decrease in bilirubin relative to the control was observed in all experimental groups. In Group I, phosphorus levels increased by 8.91% relative to the control. The findings are important for expanding the range of feed additives with growth-stimulating effects in poultry farming.
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