Researches Regarding the Estrus Induction to Wean Sows, During the Summer Season, Using the Hormonal Products Maprelin XP10 and P.G. 600

Abstract

The researches were made with the goal to induce estrus to the wean sows, during the summer season. To the pluriparous sows we administrate 2 ml Maprelin XP 10 at 24 hours after weaning to the experimental group. Control group didn’t receive any hormonal product. Primiparous sows were split in two groups: to one group we administrate 0.5 ml Maprelin XP 10 at 24 hours after weaning; to the other group we administrate 5 ml P.G. 600 in the weaning day. Weaning to estrus interval was 5.33±0.21 days for 2 ml Maprelin XP group, 5.16±0.24 days for control group, 6.32±0.39 days for 0.5 ml Maprelin XP and 5.18±0.35 days for P.G. 600 group. Proportion in estrus after weaning was 98.01% for 2 ml Maprelin XP group, 96.28% for control group, 89.56% for 0.5 ml Maprelin XP and 91.22% for P.G. 600 group. Fecundity at 28 days after the A.I. was 91.71% for 2 ml Maprelin XP group, 92.26% for control group, 83.41% for 0.5 ml Maprelin XP and 86.61% for P.G. 600 group. Farrowing rate was 86.00% for 2 ml Maprelin XP group, 85.11% for control group, 76.68% for 0.5 ml Maprelin XP and 78.66% for P.G. 600 group.