Hodnocení plodnosti skotu

The aim of the thesis is to determine the levels of reproduction of cattle in the Czech Republic, the world and in the selected company, then to compare them and to determine the influences that affect them. The company ARGA Březnice a.s., dairy cattle breeding mainly Czech Fleckvieh and about 60 Holstein cattle, was selected for the evaluation of reproduction. The current situation of cattle fertility in the Czech Republic and in the company was determined according to the records provided by ČMSCH, a.s. - Czech Moravian Breeders' Corporsation, plc . The level of reproduction in cattle breeding is generally weaker or poor. There are many influences on reproduction, some of which are more influential and others less so. For example, warmer temperatures have a very negative effect on calving in primiparous cows, a less negative effect on older dairy cows and a positive effect on heifers. When cows were divided into production groups, it was found that cows with an average daily milk yield of up to 27.9 litres conceived better at first insemination than cows with a higher yield. On the AGRA Březnice farm it was found that fertility is also influenced by properly conducted selection