Abstract
Purpose. Assessment of the influence of the organomineral feed additive "Si-lact" on the productivity and metabolism of broiler chickens. Materials and Мethods. The object of the study was broiler chickens of the Arbor Acres cross and an organomineral feed additive. The studies were carried out on 90 broiler chickens, divided into 3 groups: control and two experimental ones. The control bird received a diet according to the recommendations of VNITIP (2019), chickens of experimental group I were given an organomineral feed additive (lactulose, succinic acid, arginine, silicon), II – were given a feed additive devoid of lactulose. Morphological blood parameters were determined using a DF 50 VetPlus device (URIT Medial Electronic Co., Ltd, China). Biochemical studies of blood serum were carried out on a CS-T240 apparatus (DIRUI Industrial Co., Ltd, China) using commercial kits for veterinary research DiaVetTest (Russia). The chemical composition of broiler droppings, feed and body tissue was determined using standard methods. Statistical analysis of the data obtained during the experiment was carried out using the Statistica 10.0 program (StatSoft Inc., USA) and Microsoft Excel (Microsoft, USA). Results. Feeding with an organomineral feed additive (group I) ensured an increase in live weight of 2.28 kg, which was 10.7% (P≤0.05) higher than the same parameter in the control. The growth rate during the experiment in experimental group II was similar (2.27 kg; P≤0.05). At the same time, chickens of experimental group I in terms of live weight by the end of the experiment exceeded their peers from the control group by 17.9% (P≤0.05), group II – by 10.8%. The organomineral additive improved some metabolic parameters. The level of digestibility of organic matter, crude protein, carbohydrates and nitrogen-free extractive substances increases in experimental I by 5.6 (P≤0.05); 4.2; 5.9 (P≤0.05) and 5.3%, respectively, compared with control. Conclusion. An organomineral feed additive containing lactulose has a greater effect on the growth and, as a consequence, the productivity of broiler chickens.
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