In my thesis I focused on analysis lenght of gestation of breeding cows in period from 2014 to 2017. Monitoring was on farm in Velké Němčice, where are breed first of all Montbeliard and Holstein breed. There are cross with breed of Jersey, Red Holstein and Brownswiss. Lenght of gestation was influence by series of factors during the watched period. Partial influence on the lenght of gestation had years and month of breeding cow. The smallest lenght of gestation was in summer months, when effect of heating stres was the biggest. The most of lenght of gestation was influenced by breed of breeding cows and line of bulls, that was used to their insemination. Difference of lenght of gestation among individuals breeds of breeding cows and line of bulls used to their insemination was significant. Lenght of gestation was influenced by rank of laktation of breeding cow, sex of birth of calf and twins. From result of monitoring is evident, that lenght of gestation is influenced by lot of factors, that should not be underestimate by breeder.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:427818 |
| Date | January 2019 |
| Creators | Vintrlíková, Daniela |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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