RESEARCH REGARDING PARTURITION SYNCHRONIZATION IN SOWS BY USING F2ALPHA PROSTAGLANDIN AND OXYTOCIN
G. Nacu, C. Irimia, Şt. Ciornei
651 Camborough hybrid sows at their first to fourth farrowing were administrated intramuscularly 1ml of Proliz (0.2 mg cloprostenol) on day 113 or 114 of gestation. After 24 hours from the inoculation of luteolysin, 1.5 ml of oxytocin (15 UI) were inoculated. The birthing was monitored and compared to a batch of 600 Camborough sows that were not hormonally treated.
The F2alpha prostaglandin and oxytocin treatment generated a quick and synchronic farrowing. The farrowing began on an average after 24.5±4.6 minutes from the oxytocin administration, with oscillations between 9 and 162 minutes. This process helped induce births after 114 of gestation for 99.08% of the sows treated on day 113, and after 115 days of gestation for 90.20% of the sows treated on day 114. The sows in the untreated batch gave farrow as follows: (10.4% up to day 114; 20.6% on day 115; 26.8% on day 116; 25.3% on day 117; 13.3% on day 118; 3.5% on day 119, and 2.8% after 119 days of gestation. In both batches the time of the beginning and the duration of the farrowing were monitored.
Key words: synchronization, parturition, sows, F2alpha prostaglandin, oxytocin