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Výživa dojnic v průběhu tranzitního období
SVAČINOVÁ, Nela
In this bachelor thesis the basic factors are described related to calving, correct nutrition and lactation of the dairy cow. The individual parts of the digestive tract and the course of digestive physiology are mentioned in the introduction. Subsequently, a section is devoted to transition period and risks that surround it. A substantial part of the work is also summary of basic nutrients found in feeds and basic components included in cattle rations.
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Vybrané vlivy na růst telat masného skotu
TOMKOVÁ, Michaela
The aim of this work was to analyze selected effects on the growth of calves of a selected herd of aberdeen angus cattle in Mýto farm in Hořice na Šumavě for the monitored period of 6 years (2012 - 2017). A total of 242 pure-bred calves of the aberdeen angus breed born during the reference period was included in the evaluation. Birth weight, weight at 120, 210 and 365 days were determined in calves. Subsequently, the group of calves was sorted by sex, year of birth, month of birth, birth order, father's individuality and mother's exterior. The data were statistically processed in Microsoft Excel and evaluated in Statsoft Statistica. When confronted with the national average published in the KUMP deadlines, the observed calves always had a lower birth weight, but higher weight at 120, 210 and 365 days. When evaluating the effect of the year of birth on calf growth, it was found that calves born in 2012 and 2013 achieved the best results. The best months for calving aberdeen angus breeds on the monitored breed were February to April. In terms of birth order, calves born to cows after the third calving achieved the best results. The worst results were achieved by calves from heifers and cows after the ninth calving. The best breeding-bull in breed regarding to the growth ability of calves was the sire ZAA 916. The PAA 027 sire showed the best results in terms of ease of delivery. There was no significant difference in the effect of maternal exterior on the growth ability of calves.
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Analysis of the performance of beef cattle herds
ŠEBELKA, Štěpán
The aim of this thesis was to evaluate the chosen effects of control of performance on the growth of calves in the most common meat breeds of the South Bohemian region (Aberdeen Angus, Charolais, Limousine, Beef Simmental) involved in the monitoring of performance of beef cattle during the period 2009 - 2014. The aim of this thesis was to evaluate what influences affect the weight of beef calves during their rearing. When comparing the average weight of calves according to breed, the highest weight at birth were (42.37 kg), at 120 days (191.32 kg), at 210 days (307.65 kg) and at 365 days (503.53 kg) with the Charolais breed. When examining the influence of year of calving at the birth weight at 120, 210, and 365 days, it was found that calves of Limousine breed clearly reached the highest weight in 2012 in all age categories. In determining the effect of month of calving for the birth weight at 120 and 210 days of age, the best months are December to March for Aberdeen Angus and April was the best month for calving for Beef Simmental. The period of calving is going from winter until spring months. Aberdeen Angus cows up to the fifth calving make up 73.29 % of the herd. When examining the influence of calving order to calves weighing at 120, 210 and 365 days of age, the worst of all breeds are calves from the first calving. At 120 and 210 days of age, Aberdeen Angus calves were at the highest weight with the 6th calving, Limousine breed were at the highest weight of calves with the 9th calving. At 365 days of age, Aberdeen Angus calves had the highest weight with the third calving. Rearing management breed is clearly the best with breeders who participate in national exhibitions and produce bulls and heifers. Relative breeding values of the Fathers for Direct effect - growth (Peru) and relative breeding values for maternal maternal effect - growth (Meru), have verifiable affect on the weight of calves
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Assessment of diarrheal problems by calves on selected dairy cattle farm.
POLÁČKOVÁ, Eva
The aim of this thesis was to evaluate the prevalence of diarrheal diseases in calves depending on the level of postnatal care of newborns on the selective dairy cattle farm. A total of 299 calving was evaluated on the farm in the period 2013 - 2015. The total mortality of calves was less than 7 %, in which mortality due to diarrheal diseases represented less than 3 %. The colostrum quality was assessed as excellent in 74%. Passive immunization, determined as the total protein content in the blood of calves, was performed in 72 % of the calves well. 60 % of calving happened in ideal hygienic conditions and diarrhea was found in 25 % of them. In contrast, diarrheal diseases were found in 65 % of calving in poor hygienic conditions.
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