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Výživná hodnota vybraných odrůd srhy laločnaté (Dactylis glomerata)
ŠIMÁNKOVÁ, Karolína
In the Czech Republic, the grasslands constitute an important landscape element and at the same time, they are one of the basic components of horses' and ruminants' rations. Therefore, the fodder quality is important in the connection with production functions of grassland forage, especially concerning the dairy cattle. The aim of the diploma thesis was to monitor changes in the nutritional value during the vegetation and the evaluation of quality indications for selected species of Cock's-foot: three existing varieties and three varieties of the new breeding. Ash, crude protein, spectra fiber, organic matter digestibility index and relative feed value were evaluated. The changes between different phases of the vegetation were identified by raising proportion of CF, ADF and NDF in all varieties analyzed. During the aging of the cover, this process corresponded to deteriorating organic matter digestibility, decreasing relative feeding value and a decreasing tendency of nitrogen compounds. The value of CF in increasing in average from 22.6% up to 28.5%, NDF is increasing from 53.4% up to 60.5% and ADF from 29.3% up to 36.8 %. The digestibility of the organic value decreased from an average of 73.8% to 63.12%. Relative feed value decreased from an average of 114 to 91. During the vegetation, crude protein content also decreased from an average of 15.3% to 8.8%. From the analysis of results we can deduce that the varieties Vega are the best quality, vv115/10 and vv88/10, being nutritionally well balanced. The variety Zora is the worse quality. In terms of digestibility and relative feed values, the varieties of the new breeding are higher quality. These varieties are better with respect to the digestibility and relative feeding value than already existing varieties of Cock's-foot.
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The analysis of beef cattle herd on family farm
ŠIMÁNKOVÁ, Karolína
The aim of the bachelor thesis was performance evaluation of Simmental breed cattle herd within the period of 2011 2013 on a private farm. The herd consisted of 39 purebred cows as well as crossbred cows. The average lenght of the calving interval was 379.4 days and the age at the first calving was 27.3 months. Herd of calves consisted of 85 pcs. Birth weight and weight at age of 120 and 210 days was studied within group of purebred calves (49 pcs). Herd of calves was categorized by year of birth, by birth order, by sex and by sire. Meat performance and carcass value basic data were obtained within group of fattened animals. Data were statistically processed in Microsoft Excel and evaluated in programme Statistica 12. Average birth weight of calves was 41.69 kg; the average weight in 120 days was 207.86 kg and 320.6 kg in the age of 210 days. Calves reached average daily gain from birth to 120 days 1.38 kg, from birth to 210 days 1.33 kg and from 120 days to 210 days 1.25 kg. When groups of calves were classified by years, statistical differences between birth weights according to year were found. Calves born in 2012 reached the best weights in 120 and 210 days of age (215.80 kg and 327.20 kg respectively). Significant differences were found especially within birth weights according to birth order; particularly within group of first-calf heifers. First born calves average birth weight was 38.25 kg, second born 40.57 kg, third born 43 kg, fourth born 41.82 kg, fifth born 42.10 kg and sixth born calves average birth weight was 47.33 kg (significant differences were found between 1. and 2., 4. and 5., 4. and 6., 2. and 6. birth order ). The average slaughter age of animals reached 561.1 days, the average slaughter weight reached 502.6 kg and the average carcass weight was 316.21 kg. Slaughter weight of bulls reached 559.20 kg and heifers 374.09 kg, observed difference was statistically significant. Statistically significant difference was also found at carcass weight.
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