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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Vyhodnocení účinnosti a ekonomické náročnosti protokolu selektivního zaprahování krav v zemědělském podniku
 VLÁŠEK, Pavel
The aim of the thesis "Evaluation of the effectiveness and economic cost of the protocol for selective dry cow therapy in a dairy farm" was to compile a literature review focusing on the description of lactation physiology and the dry period phases. Furthermore, it aimed to analyze individual procedures of dry cow therapy and decribe mastitis as a disease including its pathogens and courses. In the practical partical part, the influence of three methods of dry cow therapy on the occurrence of mastitis and the development of somatic cell count during lactation post-calving was evaluated. These methods included dry cow therapy using teat seals alone or in combination with antibiotics. The data under analysis originated from the Agricultural Joint Stock Company Lípa, which maintains approximately 300 head of Holstein cows with a closed herd turnover. Data from the years 2020-2024 were evaluated. Based on the method of dry cow therapy, evaluated groups were formed as follows: Group 1 - Orbeseal (teat seals), Group 2 - Orbenin and Orbeseal and Group 3 - Virbactan and Orbeseal. The somatic cell count (SCC) increased on average with increasing lactation order. Group 1, treated with Orbeseal, had a higher average SCC compared to Group 2 and 3 in the first month of utility control, but the incidence of mastitis was not higher. The lowest average SCC was observed in Group 3.
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Moderní trendy ve výživě telat
 VLÁŠEK, Pavel
The idea of elaboration of this bachelor thesis was the elaboration of a literature review concerning the development of the morphology of the digestive system of calves, diseases and the method of their breeding and feeding. It also discusses feed additives-probiotics, prebiotics, synbiotics and phytobiotics. The practical part deals with the effect of probiotic additives on health and body growth. A total of 14 calves were included in the experiment, continuously divided into two groups of 7, control and experimental. Both groups were weighed at birth and subsequently every week until the age of 8 weeks. The frequency of diarrheal disease was also monitored during breeding. The results of the experiment show a positive effect of the combination of Lactobacillus sporogenes, Enterococcus faecalis and Bifidobacterium bifidum on reducing the incidence of diarrhea and increasing the average absolute increase, although it was not statistically significant (P>0,05).
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