Peforelin (GnRH analogue) stimulation of estrus as a tool to improve reproductive performance in gilts and sows

This study investigated the effects of peforelin, i.e. synthetic l-GnRH-III, on the reproductive parameters (WEI, FS, PD, TPB, LBP, SBP, WP) and reproduction indicators (ER, RR, FR, LPI) of gilts after altrenogest treatment and of post-weaning sows under commercial farm conditions. The study involved 323 sows divided into Perforelin and Control Groups within which the following subgroups were distinguished: gilts, primiparous and multiparous sows. Gilts were synchronized with altrenogest for 18 days. After 48 hours from the last administration of altrenogest, the gilts, and 24 h post-weaning, the sows, in Experimental groups were treated with peforelin (Maprelin, Veyx-Pharma), based on the manufacturers’ instruction. Based on the results presented, the use of peforelin under industrial farm conditions enhances the reproductive performance of production batches in gilts and multiparous sows following synchronization of the estrous cycle. Statistically significant differences were only observed for the estrus rate and pregnancy rate.