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Vlivy působící na hmotnost jehňat ve 100 dnech u plemene zwartbles
 KVAPILOVÁ, Tereza
The aim of this bachelor thesis was to evaluate the effects of chosen factors (rams effect, litter size and age of the ewes) on the weight of lambs at the age of 100 days of the breed Zwartbles. The evaluation was performed in 2014 and 2015 on the farm in Hranice u Nových Hradů and 263 lambs were included into it in total. From the point of view of the litter size, single lambs achieved the highest average weight of 31.28 kg and the lowest average weight of 24.42 kg was achieved by the lambs of triplets. From the point of view of the age of the ewes, the lowest weight was achieved by the lambs from the seven-year-old ewes (23.07 kg) and from the two-year-old ewes (23.88 kg). The lambs from the three-year-old ewes and the six-year-old ewes achieved the highest average weight (28.14 kg and 29.66 kg). From the point of view of the ram effect, the lowest average weight was found in lambs of the line Zvon (24.05 kg) and the lambs of the line Ztepl achieved the highest average weight (27.22 kg). From the observed effects, it was found out that the litter size and age of the ewes had an effect on the weight of lambs at the age of 100 days, but effect of the ram wasn´t proven.
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