Pig breeding is one of the leading agricultural sectors that ensures the country’s food safety. In this regard, pig breeding must become a highly profitable branch of the agro-industrial complex due to growth of range of production performance indicators. Various feed additives are the reserve for increasing the productivity of the animals. The most popular feed supplements used today are probiotics and phytobiotics. Modern probiotic preparations are a complex (symbiotic additives) consisting of various strains of bacteria with addition of enzymes, prebiotics, chelating elements, amino acids and biologically active components. The article provides data on use of the probiotic preparation “Profort” and the phytobiotic “Intebio” in feeding of sows in farrow and nursing sows. According to the results of scientific and economic experience it was found that feed additives increased the following indicators: prolificacy — by 1.9–2.9%, size of the young piglets — by 10.4–12.3%, number of mature piglets in the litter — by 10.8–11.8%, rate of survival of the young piglets — by 4.0–6.1%, weight of the piglets litter by the moment of weaning — by 18.0–22.2%. The use of the preparations led to decrease in feed costs per 1 kg of liveweight gain and increased revenue obtained from the sale of the young livestock.

The results of research on the use of the probiotic drug “Profort” in the diet of young pigs have been presented in the article. The research was carried out under the conditions of LLC “Agrofirma Ariant” on the crossbreds of young pigs. The purpose of the research was to study the eff ectiveness of the effect of the probiotic drug “Profort” in intensive pig rearing on the reproductive traits of sows and the productive traits of piglets. In order to conduct the scientific and economic experiment at the first stage, 2 groups of pregnant sows were formed in each with 10 heads. The feeding and housing of the experimental animals were the same. In addition to the main diet the sows of the experimental group were fed the probiotic additive “Profort” at the dose of 500 g/t of feed for 30 days before and 30 days after farrowing. At the second stage the resulting young animals were divided into 3 groups. In addition to the main diet the young animals of the 1st experimental group have been received the probiotic drug “Profort” from 7 to 105 days together with compound feed. Piglets of the 2nd experimental group have been received the probiotic additive from 7 to 30 days. It has been found during of studies that as a result of the use of probiotic additive the prolificacy of sows in the experimental group was higher – 10,6 compared to 10,4 heads in the control group. The livability of piglets for weaning in the experimental group was 97,9 % compared to 93,9 % in the control group. The absolute gain in live weight of piglets from 30 to 105 days in the experimental groups was 34,94–36,98 kg, which was higher than in the control group by 7,9–14,2 %. In the blood of piglets of the experimental groups, the increase in the level of red blood cells, total protein, calcium and phosphorus has been noted.

It is impossible to increase the productivity of pigs without organizing a complete balanced feeding, which provides not only a diverse set of feeds, but also stimulating feed additives and preparations. The purpose of the work was to study the effectiveness of the effect of the phytobiotic drug “Intebio” on the reproductive traits of sows and the productivity of the resulting young animals. The feed additive “Intebio” is a mixture of natural essential oils (eucalyptus, garlic, lemon and thyme), citric acid and filler (wheat bran or sunflower meal). It has been found that as a result of the use of the feed additive “Intebio”, the prolificacy of sows in the experimental group was 10,7 heads compared to 10,4 heads in the control group. The weight of piglets at the birth in the experimental group was 1,19 kg, which was 12,3 % higher than in the control group. The weight of the piglets litter at birth was statistically significantly higher in the experimental group 12,97 kg, compared to 11,35 kg in the control group. The livability of piglets for weaning in the experimental group was 100 %, and in the control group it was 93,9 %, the difference was 6,1 abs.%. The absolute weight gain in the live weight of piglets obtained during the experiment from 30 to 105 days in the control group was 26,97 kg, and in the 1st and 2nd experimental groups it was higher by 5,59 and 2,74 kg, respectively. Thus, the use of the phytobiotic feed additive “Intebio” in feeding of t sows in gestation period allowed to increase their prolificacy, the weight of piglets at the birth and their livability for weaning. The use of the feed additive “Intebio” as part of the diet of young pigs allowed to increase the absolute and average daily gains in the live weight of animals.

Currently, the main condition for the intensification of animal husbandry in Russia is the application of the concept of rational animal feeding. In accordance with this concept, animals should be provided with complete feed, and the organization of feeding should provide conditions for the effective use of feed and the regulation of microbiological digestive processes. The purpose of the work was to study the effectiveness of the effect of the phytobiotic “Intebio” and the probiotic “Profort” on the reproductive traits of sows. The scientific and economic experiment was conducted in 2020 on pregnant and suckling sows under the conditions of OOO “Agrofi rma Ariant” (Krasnogorsky settlement in the Emanzhelinsky area in the Chelyabinsk region). The results of research of the effect of phytobiotic “Intebio” and probiotic “Profort” on the reproductive traits of sows have been presented in the article. It has been found according to the results of the conducted research that feeding sows phytobiotic “Intebio” and probiotic “Profort” in addition to the main diet for 30 days before farrowing and for 30 days after the survey allows to increase the prolificacy of sows by 2,9 and 1,9 %, respectively, the weight of piglets at birth by 12,3 and 10,4 %, the weight at weaning by 11,9 and 11,2 %, the livability of piglets by 6,1 and 4,0 %. This made it possible to reduce expenditures feed per 1 kg of piglets’ live weight gain by 18,4 and 15,6 %. It has been found on the base of conducted research that the use of phytobiotic “Intebio” and probiotic “Profort” in the feeding of pregnant and suckling sows is economically justified.