Repopulation method for improvment of reproductive performance of sows
2013
Nevrkla, P., Mendel University, Brno (Czech Republic). Dept. of Animal Breeding | Hadas, Z., Mendel University, Brno (Czech Republic)
The experiment was designed to evaluate differences in reproductive performance parametres in sows of selected utilitarian breeds before and after repopulation. The experimental population consisted of 160 sows, while the group before repopulation counted 80 sows from 1st to 5th litter. The repopulated (newly brought) group counted 80 gilts at the 1st litter. The values of the total number of piglets per litter were 12.21 +/- 2.63 before repopulation against 15.96 +/- 2.20 after repopulation. The number of live-born piglets was 11.25 +/- 2.43 before repopulation and 14.63 +/- 2.09 after repopulation. Before repopulation 0,96 +/- 0,99 of piglets were stillborn and after repopulation the number was 1.30 +/- 1.36. The values of number of reared piglets were 9.69 +/- 1.75 in the group before repopulation against 13.44 +/- 1.79 in the group after repopulation. The differences in the total number of piglets, the number of live-born piglets and the number of reared piglets were highly statistically significant. The results of the experiment confirmed the positive effect of repopulation on reproductive performance parametres of sows.
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