Realization of reproductive and productive qualities' potential of pigs by organism's immunocorrection

Abstract

The purpose of this work was to realize the reproductive qualities of sows and the productivity of young pigs with immunotropic preparations PigStim-C and PigStim-M. To set up the experiment, 30 heads of nursing sows were selected on the 15th day after the first farrowing. The selected sows were divided into 3 groups according to the breed, reproductive qualities and reproductive health according to the principle of pairs of analogues. It was found that intramuscular injection of the immunotropic drug PigStim-C to animals of the 1st experimental group (and PigStim-M to animals of the 2nd experimental group) at a dose of 5 ml per head on the 15th, 20th, and 25th day after farrowing contributes to: reducing the period from weaning to coming into heat and the onset of the optimal period for insemination by 4.5-9.1%; an increase in the success of insemination from 90% in the control group to 100%; an improvement in sows’ prolificacy by 8.1-8.6% and a decrease in the number of stillborn piglets by 16.7-33.3%; a decrease in the number of sows with prolonged farrowing by 2-3 times resulting in a decrease in the occurrence of postpartum pathologies of reproductive organs, such as metritis-mastitis-agalactia syndrome, as well as an increase in the therapeutic measures' efficiency in case of their occurence; a decrease in the disease incidence of young pigs obtained from these sows during the next farrowing by 36.8-41.5%, an increase in their viability by 1.45-2.97% and an increase in live weight at the end of the growing period by 0.16-0.18 kg, rearing – by 1.1-1.22 kg, and when removed from fattening – by 3.6-4.0 kg.