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Produkční schopnost býků Českého strakatého skotu
LAPKOVÁ, Kristýna
The aim of this bachelor thesis was to evaluate selected indicators of fattened bulls of the Czech Pied Cattle in intensive farming conditions in a farm in the South Bohemian Region. The total rating was included 371 bulls, the data were evaluated for years 2016 and 2017. The live weight before slaughter, the age at slaughter, the average daily gain, net gain, carcase weight and his classification according to SEUROP. Statistical data was processed using the program Microsoft Excel 2016 and Statsoft statistica. The average age at slaughter and live weight were 586.2 days respectively 731.8 kg in 2016, in 2017 reached 626.1 days respectively. 749.5 kg. The weight of the carcase in 2016 was 412.2 kg, the following year increased by 8.9 kg. The net gain increase was significantly higher in 2016. All these differences were statistically significant. When categorized into classes of meatiness, it reached 73.8 % of the class "U" with a carcase weight of 426.3 kg, 25.1 % of the "R" class with a carcass weight of 384.4 kg and 1.1 % of the "E" with a carcass weight of 497.3 kg. When evaluating the impact of the slaughter age on the individual indicators, the differences between the groups were statistically significant.
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The comparison of the results of fattening bulls of different breeds under the same conditions
KUBALOVÁ, Markéta
Cattle husbandryhas a long tradition in the Czech Republic agriculture.Husbandry of dairy cattle is being replaced by husbandry of beef breeds andits count has been increasing in recent years. Approximately 191 thousand of suckler cow was kept on 1st April 2014 according toCzech Statistical Office. The aim of this bachelor thesis was to analyse beef performance of fattening beef breeds, specifically crossbreds of charolais and piemontese breed, where asconditions under which fattening happened were same. The evaluation of chosen performance traits was carried out on 44 crossbreds from Old Town farm located near city of Frýdek-Místek. Groups of bulls were created according to the breed and year of slaughter. The slaughter age, live weight, carcass weight, net gain, average daily gain, and SEUROP system classification into meatiness and fat cover classes. Data were analysed using Microsoft Excel and StatsoftStatistica. T-test was used to assess significance of differences. The slaughter weight of charolais crossbreds was 636.97 (slaughter age 728.91 days), with piemontese crossbreds 639.17 kg (slaughter age 736.52 days). Minimal difference was found at carcass weight (357.85 kg in charolais, 359.08 kg in piemontese respectively). Average daily gains were also balanced 818.61 g (charolais) and 814.86 g (piemontese). Net gain difference was also low, net gain of charolais crossbreds was 490.74 g per day respectively 488.31 g per day within group of piemontese crossbreds. Differences between breeds were not statistically significant. The difference between slaughter year (2013 and 2014) was also assessed but it was not significant too. Carcass classification according to SEUROP system was in case of charolais crossbreds most often in class R (75 %), while piemontese crossbreds were mostly classified into class R (54.55 %) and U (45.45 %) in 2013. In 2014, carcass of charolais crossbreds was most often in class U (45.45 %) and E (36.36 %), carcass of piemontese in class E (30 %), U (40 %) and R (30 %). Fatness classification within two years of observation was, in all cases, into class 1. Findings did not show that under the certain conditions there were no differences between charolais and piemontese crossbreds. The difference in evaluated traits between years 2013 and 2014 within those breeds was also not confirmed which points out constancy of husbandry condition. The important thing for farmer is carcass classification according to SEUROP system and results show that piemontese crossbred carcasses are favourably classified.
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Evaluation of selected influences on performance of beef cattle
ZÍDKOVÁ, Jana
The aim of this Bachelor thesis was to compare meat breed cattle efficiency. For the comparison were chosen these breeds: Aberdeen Angus and Highland. Data about the breeds were finding on Branišov ecofarm and on Bořanovice ecofarm in the area of Šumava national park. Highland cattle breed - Scottish national cattle was imported to Czech Republic in 1991 from Scotland to mountain conditions of NP Šumava to Branišov farm. This breed is ranked among extensive meat breed of small constitutional type, it is also called ?hobby breed?. Aberdeen angus breed is ranked among most widespread meat breed in the world. It originates from North-East Scotland, where the meat performance cattle type was bred in early 18th century. Later it was crossbred with shorthorn breed. Aberdeen Angus is a breed of genetically hornless minor to medium body frame. At breeds the growth was valued by detection their live weight at birth, at the age of 120, 210 and 365 days. From detected data of suspense files basic statistic characteristics were evaluated (percent occurrence, arithmetic mean, minimum, maximum, standard deviation). The average weight of HI breed calves at birth was 25 kg at bullocks and 20 kg at heifers. In 365 days the average weight of bullocks reached 301 kg and 264 kg at heifers. The average weight of AA breed calves at birth was 37 kg (bullocks) and 34 kg (heifers). In 365 days the average weight of bullocks reached 485 kg and 365 kg at heifers. Further there were ranking of reproductive indices and maternal qualities of cows. From observed results was evaluated father influence, birth sequence and calve month sequence depending on calves? weight. Father influence on calves? growth at AA breed wasn?t statistically significant. The highest live weight in 120, 210 and 365 days had AA calves at third calving. At HI breed was influence of calving sequence on claves live weight statistically insignificant. The highest live weight (120, 210 days) had the calves born in august at AA breed (175, 64 kg or 275, 27 kg) and at HI breed (at the age of 210 days 183, 33 kg). In term of economics is this stock raising without grants unprofitable. With grants the gain on VDJ amounts 6876 CZK at AA breed and 10 186 CZK at HI breed. The results proved, that for provision of profitable stock raising BTMP would the Aberdeen Angus heifers be calved at first at the age of 24 months, it has to be assured good fertility of cows, high additions of calves and also high longevity of cows.
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