Vybrané faktory ovlivňující plodnost plemene zwartbles

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 5 years (2013 2015) were a total of 429 ewes evaluated by the followinf parameters: fertlization, reproduction intensity, total rearing. 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 197,13%. The average share of fertilization was assessed at 94,01%. Sterility reached the level of 5,99 %. The amount of the total breeding herd stood at 164,67%. Intensity of production reached 185,24 %.. 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