Taxonomic structure of rumen calf microbiome when feeding with a fat supplement

Abstract

It is known that the use of native fats for feeding ruminants causes an inhibitory effect on the rumen microflora. One of the problems with the use of fats protected by various technologies is a change in the composition of the rumen microflora. It is necessary to improve existing and create new types of protected fats.The research object was 12 red steppe calves divided by three groups - the control one and two experimental ones (n = 3). The animals of experimental group I were fed with a Palmatriks fatcontaining supplement at a dose of 0.4 kg/head, and the animals of group II - an experimental supplement (ES) at a dose of 0.25 kg/head.The use of Palmatrix contributed to the growth of Firmicutes microorganisms (1.74%), Candidatus Saccharibacteria (by 4.5%), Actinobacteria (by 1.83%) and reduced the number of Bacteroidetes bacteria (5.19%), Verrucomicrobia (by 0.75%). Feeding pf group II with ES increased the number of Saccharibacteriageneraincertaesedis bacteria (by 14.77%) in comparison with experimental group I. The combination of fat supplements with components reduced the number of Bacilli, Negativicutes and Bacteroidia bacteria by 14.77%, 9.54 and 8.12%, respectively.