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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Vliv věku při prvním otelení na užitkovost a dlouhověkost dojnic
 DRÁB, Zdeněk
The main significance of the diploma thesis was to evaluate in a clear form the influence of the level of heifer rearing and age at the first calving on the performance and longevity of dairy cows of Czech spotted cattle in the herd of Agro Kunčina a.s. Data of 390 dairy cows for the last five years were used. The data obtained were sorted according to key indicators, namely age at first calving, age at weaning, performance at first lactation, lifetime performance, milk content, order of lactation and causes of weaning. The available statistical methods were used to evaluate the effect of age at first calving on performance, longevity, causes of exclusion and content of milk components..
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Chov české slepice
 DRÁB, Zdeněk
The main purpose of the bachelor thesis was to collect information about breeding of Czech Hen and the importance of the genetic resources. The history of the breed was described. Another part of the bachelor thesis was the description of the colour strains of the Czech Hen, other similar breeds, the current state, the utility and the principles of breeding. Possible perspectives in breeding of the Czech Hen, its use in creation of laying type of hybrids and possibility of use in organic breeding are suggested at the end of the thesis.
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