The aim of this study was to analyze locomotive score of dairy cows with movement disorder and its influence on milk production. For the experiment were chosen Czech fleckvieh dairy cows in company GenAgro Říčany a. s. in season from June to December 2015. The monitoring was conducted a day after the milk recording. Analyzed parameters of milk recording were milk yield (kg of milk), protein content (%), fat (%) amount of somatic cells (thousands/ml), lactose (%) and content of urea (%). Cows were evaluated according to the locomotive rating scale from 1 (cow with no movement disorder) to 5 (cow with a certain degree of lameness). According to the results we can observe that hoof diseases have effect on reducing of the amount of produced milk, especially in movement score 3 and 4 (P < 0.01), increase of protein content, fat, lactose (P < 0.05) and somatic cells (P < 0.01). It can be concluded that increasing of lameness of dairy cows significantly affect the reduction of milk production by 1.8 kg/cow/day. Due to current low prices of milk, it could have more negative impact on the economy of the dairy cattle breeding.

Goal of this work was to analyse performance on specific farm. For this evaluation we chose a period since 2011 to 2015. Data were later compared acording to years and quarters. Production and reproduction indicators were evaluated. In reproduction indicators were analysed succes of insemination and number of piglets, specifically, number of all born piglets, number of alive and stilborn piglets, and number of bred piglets. During evaluation of insemination succes we concluded, that, the best performance was achieved in 2015, when 84,9% of inseminated females were gravid. We also concluded that gilts and swines get pregnant better at autumn. When we evaluated litters, it was concluded, that that in 2014 swines had 15,23 born piglets in average. With production indicators we found out, that in 2013 there were the biggest average daily agains (0,465 kg). The largest agains were recorded in the winter. The smallest perishing rate was in 2012 where 1,76% perished in average. In fattening, the smallest daily gain happened in 2013 (0,872 kg). The smallest intake of feed was in 2011 when we recorded 2,695 kilograms of feed per kilogram of gain.

The aim of this diploma thesis was evaulating addition of mixture of essential oils into the diet of high yielding cows and its affect on their performance. Cows were divided into 2 groups (P a K), 18 cows in each group. Both groups were fed by the same diet, the only difference was another kind of premin. The diet of group P inclueded mixture of essential oils with dose 1,2 g per cow per day. During the 100 days lasting expe-riment, dry matter intake, milk yield, milk components, rumen fluid and blood composi-tion were monitored. The results were processed and statistically evaluated. The results show conclusive decrease (P < 0,05) of dry matter intake in group P by 0,83 kg.day-1 (3,22 %). The most economic impact is conclusive decrease (P < 0,05) of milk yield in average of 3,72 kg (8,8 %) per cow per day. Simultaneously there was a decrease in milk fat concentration of 12,17 %. On the other hand, the concentration of milk protein was slightly increased in group P.

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