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Pig Journal Volume: 52
Publication date: November 2003

Short Communications

INCREASING THE PREDICTABILITY OF FARROWING IN SWINE WITH OXYTOCIN OR A PARASYMPATHOMIMETIC AGENT AFTER INDUCING PARTURITION BY CLOPROSTENOL
G. Balogh and G. Bilkei

Abstract
The objective of the present study was to determine the effect of a second injection of either oxytocin, or second or third injection of a parasympathomimetic agent after initial cloprostenol (prostaglandin F 2 analogue) induction, on the farrowing response of sows. The trial animals were treated as follows: Group one (n=299 sows) received a single perivulvar injection of 175 g cloprostenol at day 113 of pregnancy. Group two (n=297) were treated like those in group one, but also received 10 IU of oxytocin intramuscularly 24 hours later. Group three (n=292) were treated as group one, but also received 0.2 mg of a parasympathomimetic agent (carbamylcholine) intramuscularly 24 hours later. Group four (n=298) were the same as group three, but also received, intramuscularly, the same amount of the parasympathomimetic agent, after the first piglet had been born. Timing of farrowing, duration of parturition, total born litter size and stillbirth rates were evaluated.
???? Cloprostenol/oxytocin or cloprostenol/parasympathomimetic agent treated sows revealed significant (P<0.01) better results than the cloprostenol treated sows, except for total born litter size.

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