Relevance. One of the unsolved problems of modern industrial pig breeding remains the problem of preserving the health and realizing the reproductive potential of the breeding stock. In the light of the above, it seems promising to develop, test and introduce into practical veterinary medicine new therapeutic and preventive means that ensure the preservation of health, the actualization of productive and reproductive qualities of animals, the use of which would be economically feasible.Methods. To set up the experiment, 30 heads of suckling sows were selected on the 15th day after the first farrowing. The selected sows were divided into 3 groups based on the breed, reproductive qualities and reproductive health according to the principle of pairs-analogues.Results. It was found that intramuscular injection at a dose of 5 ml per head on the 15th, 20th and 25th days after farrowing of the immunotropic drug PigStim-C to animals of the 1st experimental group, and PigStim-M — to animals of the 2nd experimental group contributes to: reducing the period from weaning to the manifestation of phenomenon of heat and the onset of the optimal period for insemination by 4.5–9.1%; an increase in the fertility of insemination from 90% in the control group to 100%; an improvement in the multiplicity of sows by 8.1–8.6% and a decrease in the number of stillborn piglets by 16.7–33.3%; reducing the number of sows with prolonged farrowing by 2–3 times and, as a result, reducing the occurrence of postpartum pathologies of the reproductive organs, such as metritis-mastitis-agalactia syndrome, as well as to increase the effectiveness of therapeutic measures if pathologies occur; reducing the incidence of young pigs received from these sows during the next farrowing by 36.8–41.5%, an increase in their livability by 1.45–2.97% and an increase in live weight at the end of the growing period by 0.16–0.18 kg, at the end of rearing — by 1.1–1.22 kg, and when removed from fattening — by 3.6–4.0 kg.

The purpose of this work is to improve veterinary and hygienic methods for implementing the reproductive qualities of sows and preserving the health of suckling piglets. The animals of the 1st experimental group were injected intramuscularly with the immunotropic preparation PigStim-C at a dose of 5 ml per head three times 10 and 5 days before weaning from piglets and directly during weaning. The Pigstim-M immunotropic preparation was injected into the sows of the 2nd experimental group at the specified time and at the same dose. The animals of the control group were not injected with immunotropic drugs and other procedures not provided for by the technological map were not performed. It was found that intramuscular injection of PigStim series immunotropic drugs (PIGSTIM-C and PigStim-M) to sows 10 and 5 days before and immediately after weaning of piglets contributed to: the earliest manifestation of signs of hunting and a reduction in the period from weaning to insemination; an increase to 100% of the fruitfulness of insemination; a reduction in the duration of farrowing by 1.0-1.1 hours and the optimal course of the birth and postpartum periods by reducing the number of sows in need of obstetric care, and the number of postpartum diseases, such as metritis-mastitis-agalactia syndrome; an increase in the multiple pregnancy of sows by 1.0 – 1.2 heads, a decrease in the number of stillbirths and an increase in the number of piglets received from the group as a whole by 22 and 24 heads; an increase in the safety of piglets during the suckling period by 1.78 and 0.32% and an increase in the number of piglets weaned from sows by an average of 1.2 heads and in the group as a whole by 24 heads.