Characteristics of childbirth in highly productive sows

Abstract

The purpose of this work was to analyze the prevalence of normal and pathological births in highly productive sows and the impact of their course on further reproductive function. The research was carried out in an industrial complex on 260 highly productive Yorkshire Landrace sows of Danish breeding. It was found that in highly productive sows in 32.69% of cases, pathological labor is recorded, including weak contractions and attempts - in 20.0% and manual labor – in 12.69%. With the clinical manifestation of weak labor activity in women in labor and with the provision of manual labor, 16.32% and 15.20% more piglets were received from them than during normal childbirth. At the same time, there is an increase in the duration of labor by 31.09% (p<0.001) and by 43.15% (p< 0.001), respectively. In pathological childbirth, women in labor are observed to breed more stillborn and mummified piglets than in normal childbirth. Providing obstetric care during childbirth increases the risk of developing inflammatory diseases of the uterus and breast in animals in the early postpartum period. The most common postpartum pathology with primary weakness of labor and manual labor is inflammation of the uterine mucosa, and with manual labor it is supplemented by an increase in the number of sick animals with postpartum dysgalactia. In the next reproductive cycle, the sows, in which the physiological course of the birth process and weak contractions and attempts were recorded, had identical reproduction indicators. However, in animals that had a history of primary weakness of labor activity during the last birth, an increase in the unproductive period was recorded. In sows, after manual care, there is a violation and delay in the restoration of sexual cyclicity, a decrease in fertilization.