The aim of our work was to survey private farms in the Poltava region on the prevalence of Chlamydia-like organisms Waddlia chondrophila and Parachlamydia acanthamoebae. Materials and methods: The PCR research was conducted in 2018-2019 at the Institute of Pig Breeding and Аgro-industrial production of the NAAS. The study materials were 300 vaginal scrapings of cows and 28 samples of clinical material of pigs and boars with a suspicion of a chlamydial infection, which were selected at private farms in the Poltava region. Results: Chlamydia-like bacteria Waddlia chrondophila DNA was detected in 132 (44%) samples taken from cows and 8 (28.6%) samples from pigs and boars. Parachlamydia acanthamoebae DNA was not detected in pig samples. However, 43 (14.3%) clinical samples taken from cows were found to be Parachlamydia acanthamoebae – positive. 9 (3%) cows and 2 (7.14%) pigs turned out to be Chlamydia spp. – positive (the samples contained DNA of bacteria of the family Chlamydiaceae). Сonclusions: Our data indicate a relatively high prevalence of Chlamydia-like bacteria in problematic as to chlamydial infection farms in the Poltava region. Chlamydial infection carry a zoonotic threat, therefore it is necessary to observe safety and personal hygiene measures when working with animals. In addition, it is necessary to carry out periodic screening among the population with reproductive disorders and in occupational risk groups, periodic monitoring in livestock farms, to avoid the consuming the unpasteurized milk, and thermally unprocessed meat.

Human health is largely determined by the influence of environmental factors, including the quality of foodstuff. Nutrition is one of the most important factors, so the application of modern knowledge about the energy value and fatty acid composition of basic foods, as well as the organization of a rational diet of people on this basis can significantly improve it. This article analyses data on the fatty acid composition of fat when using different feedstuffs in swine diets. The use of additives in animal diets in order to increase their productivity affects the quality of products, in particular the fatty acid composition of swine fat, which influences the physical and chemical properties and technological properties of food products. The role of saturated and polyunsaturated fatty acids in human and animal bodies, which play an extremely important role in metabolism, is described. The data on their content in fat and swine products as the main source of these substances in the human diet are summarised. The importance of a balanced intake of polyunsaturated fatty acids in the human diet is discussed, which contributes to the prevention of various diseases, and a review of the results of studies on the effect of various feedstuffs on the fatty acid composition of swine products is given, since the content of individual fatty acids that are not synthesised in the animal body is affected by feed quality and the presence of fatty acids in lipids of feed, which determine the quality of human foods.