The Master´s thesis is focused on the rate of reproduction and growth intensity of calves Aberdeen Angus breed. In the research was monitored the offspring in organic farming located in the Zlín region during the period from 2007 to 2016. Data were obtained from the performance testing of beef cattle and from the register of the farm. There was achieved following values in the reproduction: pregnancy rate after the first insemination 62.5 % in heifers and 60 % in cows, service time 80.7 days, meantime 365.5 days, crude natality 107%, pure natality 102%, live reared calves 93%. It is obvious from these results that the rate of reproduction of this breed is very good. With the growth intensity of calves there was monitored the influence of sire, year and sex on the weight, gains and hip height of offspring. Influence of sire on birth weight, weight at 120, 210 and 365 days of age, gains and height of offspring achieved often highly significant (p < 0.01) differences. Statistically important (p < 0.05) differences in weights of calves due to influence of year were recorded at birth day and at 120 days of age calves, while at 365 days of age calves were revealed significant (p < 0.01) differences in weights and gains between years. In case of the influence of sex between bulls and heifers were revealed highly significant (p < 0.01) differences confirmed generally known principle that the males have a higher birth weight and have a higher growth ability than females.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:430381 |
| Date | January 2017 |
| Creators | Schild, Marek |
| 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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