Analýza stáda skotu mléčného užitkového typu v podmínkách ekologického zemědělství

The aim of this thesis was to analyse the situation in the breeding of dairy breed Holstein cattle reared on the farm in the organic farming system. The work was focused on the milk production of dairy cows on reproduction parameters and on the influences affecting these parameters. The followed period included the year 2016. In the evaluation we included 53 heads, dams of Holstein breed and their hybrids. The length of the intervening period was assessed in 43 dams, the average length amounted 428.5 days. The structure of the herd by year of dams' birth formed from 20.75 % dams was born in the year of 2013. At the first calving were dairy cows the entire herd average age 30.4 months. According to the lactation most dairy cows on 2nd lactation, i.e. 24.53 %, at least then 10th lactation, i.e. 1.88 %. The average milk yield per cow per day was greatest in the month of May and 24.5 kg and lowest in the month of November and that of 15.3 kg. The average milk yield per day was 20.96 kg of milk and the annual was 6392.8 kg of milk. The average fat content in milk was 4.03% and the average protein content was 3.36 % in the milk from all the cows. Average number of somatic cells was 152500 in 1 ml of milk and the average total number of microorganisms was 21830 micro-organisms in 1 ml of milk