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The evaluation of passive immunization level in meat calves in selected breeding
KRUPKA, Martin
The aim of the thesis was to evaluate the influence of selected factors on the level of passive immunization of calves (expressed in total protein, g/l in blood serum) in selected beef cattle breeding. In the monitored period 2014-2016, a total of 205 samples of calf serum were evaluated. The selected factors were: the length of dry period and parity, colostrum quality, the time of first intake of colostrum after birth, the weight and sex of the calf. An adequate level of passive immunity was found in 90.2% of calves. This result was also reflected in low calf mortality rates in monitored years: 1.16% (2014), 1.15% (2015) and 1.23% (2016). At the level of passive immunization, the time of the first colostrum intake (P < 0,001), parity (P = 0,0002), colostrum quality (P = 0,0061) and the length of dry period (P = 0,0008) were the most important factors. The other evaluated factors (sex and birth weight of calves) were not statistically significant. Colostrum period management is essential for the rearing of healthy calves and profitability of breeding.
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Analysis of health problems in rearing calves in selected breeding
KRUPKA, Martin
The thesis is focused on health issues in the rearing of calves depending on the occurrence of complicated births and the level of postpartum care about newborn calves. The literature review describes the physiological calving, factors influencing its process, postpartum care about newborn calves. It also described selected diseases of calves which are considered as the most serious. Own work is based on the data obtained in the period 2011-2013 and was focused on running of the total 357 births, incidence of complications, birth weight of newborn calves, the level of postnatal care about calves, particularly relation with time of the first colostrum intake, the disease incidence, a morbidity and mortality rate within three months of age.
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