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Zhodnocení reprodukčních vlastností prasnic ve vybraném užitkovém chovu
Behančínová, Martina
This thesis deals with the evaluation of reproductive performance of sows in pig selected utility. The literary section describes the basic characteristics of reproduction, which are fertility and milk production. It clarifies the external and internal influences on reproduction, describes the parent breeds of pigs and time of birth. It also deals with a birth weight of piglets, removal of sows from reproduction and fertility problems. The research section focuses on finding out the number of piglets born total, the number of piglets born alive, the number of sow-reared piglets, losses of all born piglets to weaning and losses of live-born piglets to weaning. The thesis also analyzes the indicators of fertility such as the length of the gestation period, the number of litters per year, the order of the litter, the length meantime, the service period, the interval from weaning to flush, the litter size and the birth weight of piglets. On the basis of these data we investigated the influence of the order of litter on the reproductive performance of sows and on a birth weight of piglets and also the effect of a boar on reproductive performance of sows and on the birth weight of piglets. The statistical method used for the evaluation was Tukey HSD test.
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