Vliv ročního období na kondici dojnic holštýnského plemene skotu

ABSTRACT This thesis contains solution of issue Effect of season to condition Holstein cattle breed in period from December 2013 to December 2014 in BONAGRO, a. s. in Šlapanice city in herd about 80 dairy cows in the first stage of lactation. Experiments were made periodically on the first week of month, overall twelve times per a year. Whole thesis is based on subjective evaluation of body condition of cows. I statistically demonstrated effect of season to condition of cows. I also showed that season affected feed factions. I subdued these factions to special sieve analysis (Penn State Separator). Furthermore, I found statistically conclusive effect of season to residual amount of washed excrements, which I subdued to primary analysis. Feed and excrement analysis place together with evaluation of body condition. At the same time, I measured temperature inside the stable and compared it with temperature in surroundings of Šlapanice. In the end, I made an analysis of milk in university laboratory, which were compared with results of control of heredity, regularly made on the farm. All results are shown in this thesis and are complemented by graphs, tables, analysis and photos