The aim of this thesis was to determine whether the seasons has an effect on intake of dry matter ration and milk production by high produced dairy cows. The research was conducted in school farm with the breeding of Holstein cattle. Practical part of this work was focused on monitoring of dry matter TMR and remains of feed, which were also recorded their quantity. By this, it was found actual income based ration. Furthermore, using data from performance testing, the evaluation of milk production was conducted, the structure of feed was followed by a separator and a nutritional status of animals was followed by a condition score (BCS). The subject of surveillance was group of cows with high milk yield, which was divided into 3 sections. In the experiment were included 80 cows (their number was changed during the year). Monitoring was conducted once a month during the period from May 2014 to March 2015. The results were processed by standard mathematical and statistical methods. It was found that the remains of feed for the entire period had the value 1402.6 kg. Most of them were remained at the end of the section. The structure of ration corresponded to recommended values. During the evaluation of feeds remains was discovered selection of feed. Condition of dairy cows during the year did not significantly change (only by 0.3 point). The average content of dry matter amounted to 45.9 %. Income of dry matter had a value on average 24.6 kg (in range 21-31 kg). It was confirmed the negative correlation between intake of dry matter and temperature in the stable. Subsequently, we confirmed a positive correlation dependence on intake of dry matter and milk production.