Vyhodnocení plodnosti plemene zwartbles ve vybraném chovu

The aim of this thesis was evaluate fertlility of the Zwartbles sheep in zhe flock of sheep breed by Mrs. Marie Schickerová. In the reporting period of 3 years (2013 2015) were a total of 261 ewes evaluated by the followinf parameters: fertlization, reproduction intensity, total rearing, infertility, rearing of lambs born and total mortality of lambs. Basic reproductive parameters were compared with the flocks originating from the Union sheep and goats of the Czech Republic. They were monitored factors that have or may have an impact on fertility. The first factor was the impact of age on fertility, selected second order lambing and the last was the influence line. The average fertility of the herd reached 200,39%. The average share of fertilization was assessed at 91,98%. Sterility reached the level of 8,02 %. The amount of the total breeding herd stood at 159,76%. Intensity of production reached 184,34 %. Mortality was 13,34% and thus survival rate of lambs was 86,66 %. Based on calculations, it was found a hightly significant effect of age and rank lambing fertility. Influence line was not clearly demonstrated. Statistical evaluation of indicators of fertility, the intensity of reproduction, fertilization and overal breeding showed differences in the average monitored herds compared with herds in the performance tests. In the observed herd these values were significantly higher