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Použití různých mléčných krmných směsí ve výživě telat
Divišová, Markéta
The aim of this diploma thesis is to evaluate the weight, hip height differences, and the occurrence of diarrhea in calves, which were fed with various milk compound feed. The experiment was conducted on 26 Holstein calves divided into 2 groups (n = 13). The control group was fed by milk compound feed Startino (Sano) and the experimental group with milk compound feed LilaCitro (Sano). The control compound feed was a skimmed milk type and the experimental compound feed was a whey type. Feeding went on the identical schedule. The experimental compound feed was used from the 3rd week as at this age, the calf is able to digest whey. In evaluated parameters (weight, gain, hip height, diarrhea occurrence), there were not found any statistically significant differences between the groups (p>0,05). The economical aspect of different feeding compounds was evaluated as well. The overall expenses of milk compound feed of the experimental group are 1 652,02 CZK lower than those of the control group. Given that we did not find out any statistically significant differences in weight, hip height, and diarrhea occurrence but there is the evident difference in the expenses of compound feed, it is feasible to recommend and use cheaper milk compound feed of whey type.
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Vliv tělesného rámce dojnic na porodní hmotnost telat českého strakatého skotu
Halvová, Lucie
The aim of this work was to analyze the influence of the body frame of dairy Czech fleckvieh cattle on the birth weight of calves. It contains breeding of dairy cattle in the world, production and consumption of milk in the world and in the European Union, description of the breed Czech fleckvieh, linear description and reproduction of cattle. For this purpose were measured and weighted 123 dairy cows and 139 calves. The measurement took place during one calendar year from December 2017 to November 2018 (12 months). These parameters were measured in dairy cows: by using a measuring stick was measured hight at cross (in cm), hip widht (in cm), rump lenght (in cm), body depth (in cm); by using an animeter (tape measure for watching the weight increase in cattle) was measured the body circumference (in cm). In calves were recorded birth weight (in kg), hight at cross (in cm), oblique lenght of the body (in cm), the sex and type of the cattle births (1, 2, 3). It can be stated that a very prominent effect of the body frame of dairy cows on the birth weight of calves was found (p < 0,01). The results show that calves from dairy cows with the largest body frame (146 ≤ cm), respectively with the smallest body frame (≤ 135 cm) had the greatest average birth weight (42.6 kg, respectively 42.8 kg,) and the greatest height in the cross (79.2 cm, respectively 80.6 cm). The significant effect on the birth weight of calves had body weight of dairy cows (p < 0,05). The results show that calves from dairy cows with a weight ≤ 649 kg, respectively with a weight of 951 ≤ kg had an greatest average birth weight (43.8 kg, respectively 43.1 kg). Also there was a significant effect of multiple births on the birth weight of calves, where twin calves had an average birth weight 33.1 kg, while calves from single births had an average birth weight 42.4 kg. The influence of the sex of calves and the influence of the order of lactation on the birth weight of calves were statistically inconclusive.
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