[Effect of the herd and parity on reproductive performance of Landrace sows]
2003
Riha, J.
The effect of parity and herd on number of inseminations per conception, litter size, litter weight, mortality of piglets, reproduction index, and parturition interval was studied on 1,325 Landrace sows from 4 herds. As the animals came from the same breeding herd and the 4 herds used the same herd management and reproduction system, the differences between the herds were very small and not significant. The average values per sow and year were as follows: 2.15 parturitions, 26.41 piglets born, 24.12 piglets born alive, 21.81 weaned piglets.
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