Analýza poruch chodivosti a její vliv na mléčnou užitkovost dojnic českého strakatého skotu ve vybraném chovu

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