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The effect of Uterotonic-Polfa on parturition time and number of stillborn piglets was examined. It was found that the examined preparate used after the birth of the first piglet significantly increased the course of parturition and decreased the number of stillborn piglets.
The studies were carried out in an industrial farm consisting of 120 sows and 1239 piglets born to them. The sows selected at random were divided into two groups. Sixty female pigs (group I) were given Uterotonic at a dose of 50 mg of propranolol (10 ml of the solution) per sow. The drug was administered once intramuscularly during parturition or a few hours after its accomplishment. The second group of 60 sows served as a control. In the control group signs of MMA were recorded in 15 per cent of the sows and in the experimental one in 8.33 per cent. The puerperal period in sows receiving Uterotonic lasted 3-5 days shorter than that in the control group. In piglets of the experimental group the signs of diarrhoea were observed in 12 litters (20 per cent) and in the control in 16 litters (26.66 per cent). Mortality in the experimental group was 5.87 per cent in the control one - 8.61 per cent. Better productive effects within 21 days after birth were also noted in the experimental group of animals than in the control one although the difference was statistically nonsignificant.
The purpose of the study was to assess the effect of Uterotonic-Polfa on the results of fertility of adult and young sow and the number of piglets born by these females. The examinations were carried out on 243 females which had been divided into two groups: group I - 125 animals including 111 multiparous sows and 14 primaparous animals aged approximately 8 months. They were given Uterotonic-Polfa once at the rate of 50 mg of propranolol i.m. at 3-4 hours before insemination. Group II - 118 females including 104 multiparous animals and 14 young sows aged approximately 8 months, weighing about 120 kg served as a control group. Insemination was carried out by 100 ml of semen at the concentration of 3-3.5 mid of Spermatozoons in the period of sexual toleration. It was found out that in group I the number of sows which had given birth was 3.55% higher than that in the control group. The use of the drug increased the number of live new-born piglets by 2.09% as compared with the control. In primaparous sows the number of deliveries was up to 14.24% higher than that in controls; however, the mean number of piglets born in a litter was only higher by 0.73 Uterotonic-Polfa administered before coition or insemination had a beneficial effect on the improvement of fertility and cropping power.
Tests were made to show how administration of Uterotonic-Polfa preparation, which contained 50 mg of propranolol in 10 ml of solvent, influenced occurrence of MMA syndrome and the fertility in pigs. It has been proved that application of this preparation after the birth of the first piglet limits occurrence of MMA and decreases the percentage of piglets which die shortly after birth (first 7 days). What is more, applying the preparation has beneficial influence on the fertility of sows and gilts. In percentage terms, the number of females which were rejected because of inability to become pregnant was considerably higher in control groups rather than experimental ones.
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