To study the effect of L-asparaginates and phytase on the content of actinomycetes and enterobacteria in the intestinal microbiome of broiler chickens

Abstract

In 2021, in the vivarium of the FNC "VNITIP" of the Russian Academy of Sciences, on 4 groups of broiler chickens of the cross breeding of the SGC "Smena 8", an experiment was conducted with the use of a mineral additive in the form of Lasparaginates in feed, both in combination with phytase and without it. Group I chickens received complete mixed feeds with the addition of inorganic forms of microelements in the form of premixes in accordance with the guarantee standards. Group II chickens received a total diet without the inclusion of microelements of the premix, but with the addition of the phytase enzyme in the amount of 1 million units. per ton. The birds of the third experimental group received feed with the addition of a mineral premix (OMEK-broiler) in the form of Lasparaginates, with a content of 7.5% of microelements from the accepted norms. Group IV chickens consumed complete mixed feed with the inclusion of L-asparaginates, with a content of 7.5% of microelements from the accepted norms, with the addition of phytase in the amount of 1 million units / t. Based on the data obtained, it was found that the introduction of L-asparaginates into the diets in an amount of 7.5% of the guaranteed norms provided better assimilation of metals, contributing to a more complete assimilation of feed nutrients. The addition of phytase to Lasparaginates enhanced this process, which could indirectly affect the improvement of broilers' productive indicators, as well as the qualitative and quantitative characteristics of the microbial community of their intestines. Thus, the number of actinomycetes and enterobacteria in all experimental groups showed low indicators, which indicated not only good feed quality and its high conversion, but also increased activity of biochemical processes.