Features of the intermediate metabolism of broiler chickens with the introduction of fulvohumates in the diet

Summary. The article presents the results of evaluation of the effect of fulvohumate on the energy metabolism of broiler chickens. The results of studies showed that fulvohumates influenced the productive effect of digestible nutrients of the diet, in particular, led to an increase in the coefficients of digestibility of crude fat, crude protein and nitrogen-free extractive substances. At the same time, the productive effect of fulvohumates is mediated by the effect on energy metabolism, in particular, by an increase in metabolizable energy, coefficient of useful utilization of metabolizable energy and reduction of energy losses with manure.

Introduction. Growing broiler chickens is an important area of poultry production that requires certain conditions to be met in order to achieve high performance. The intensive growth rate of broiler chickens requires a large amount of energy, so the regulation of energy metabolism is an important aspect of their growth. Energy balance is a complex multifactorial process that depends primarily on the diet of the animals. Under the condition of a balanced diet, the additional introduction of growth biostimulants has an effect on metabolic states in particular and on the efficiency of cultivation in general. Humic substances, taking into account their unique physical and chemical properties, influence production parameters, immune system and general condition of animals. Considering the fact that energy is the key to productivity, an important aspect of this issue is to find out the role of humic substances on the energy balance and metabolic state of broiler chickens.

Object. The object of research is broiler chickens of the cross ArborAcres.

Materials and methods. The studies were carried out on the basis of FGBNU "Federal Scientific
Center of Biological Systems and Agrotechnologies of the Russian Academy". Zootechnical analysis of feeds and biosubstrates was performed in accordance with the unified methods.

Results and conclusions. Introduction of humic substances into the diet of broiler chickens was accompanied by growth intensification, the difference in live weight of chickens of control and experimental groups amounted to 21,55 % (P≤0,05). At the same time, feed costs per 1 kg of gain in the experimental group were lower by 5.7 %. Humic substances influenced the coefficients of digestibility of nutrients of the diet, so the digestibility of crude fat was higher by 4,52 % (P≤0,05), crude protein by 3,58 % (P≤0,05) and non-nitrogenous extractive substances by 2,77 % (P≤0,05). At the same time, the productive effect of humic additives was mediated by the effect on energy metabolism, in particular, an increase in metabolizable energy and a decrease in energy losses with litter. At the same time, the increase in the metabolic energy of the supernatant and the coefficient of useful utilization of metabolic energy in the humic group indicated the overall efficiency of intercalary metabolism. Thus, humic supplementation can be an effective tool to optimize energy metabolism in broiler chickens. Their use is accompanied by an increase in live weight dynamics with a simultaneous decrease in feed conversion ratio, which also makes it cost-effective to feed this additive.

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