National Repository of Grey Literature 296 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Poruchy plodnosti prasnic
Vašicová, Tereza
The bachelor thesis focuses on fertility disorders in sows. The first part describes the reproductive system, i.e. the reproductive organs of the sow; fertility and its parameters, which include internal and external factors affecting fertility, such as nutrition, microclimate, lenght of the inter-period or age of the sow. The sexual cycle of the sow i salso briefly described, covering all stages, namely proestrus, estrus, me-testrus and diestrus. The second part focuses on fertlity disorders, which are divided into congenital, which include developmental disorders or anomalies, acquired, which are most commonly caused by viruses or bacteria, and separately also infertility. For the disorders, the clinical manifestations of the disease, their onset, or prevention, and in some cases, if known, therapy are described.
Vliv vitamínů rozpustných v tucích na reprodukci mléčného skotu
Jandová, Romana
Abstract Fertility is an important factor in dairy cattle breeding. Temperature stress, lack of food, insufficient amount of vitamins and minerals in the ration or diseases can have a negative effect on it. As stated in this work, fertility is mainly influenced by the content of fat-soluble vitamins, especially vitamin E. Many authors describe its beneficial effect on spermatogenesis in males, while in females it helps maintain the fetus or ensures a suitable environment in the uterus. Vitamin E deficiency causes delayed sexual maturity and low libido of bulls. In females, keratinization of the epithelium or absorption of a non-prosperous fetus. I work as an insemination technician. In my work, I described the influence of fat-soluble vitamins on fertility. At the same, in the chapter "Personal experience" I described the effect of the addition of a preparation with protected fats and the addition of a vitamin supplement on the fertility of dairy cows. From the results of my monitoring, it follows that these preparations had a beneficial effect on fertility. Thanks to the protected fats, there was also a better absorption of fat-soluble vitamins (A, D, E) and thus a lower incidence of cysts and a higher percentage of pregnant cows after insemination.
Návrh stratégie siete materských škôl vo vybraných štátoch EÚ
Kériová, Nela
This thesis focuses on the demographic analysis of fertility in Slovakia, the Czech Republic, Poland, Spain, Italy and Portugal. It compares the results with an analysis of the availability of pre-school facilities. Its aim is to propose an optimal strategy for the distribution of a network of private kindergartens among the selected countries as a form of profit-generating business. The intention is to evaluate, on the basis of projections, the states with the greatest potential for the application of entrepreneurship in future years.
Předpoklady úspěšné reprodukce prasnic
Doubravská, Sára
The bachelor thesis deals with the prerequisites for successful reproduction of sows. In the introductory part, the thesis focuses on the importance of reproduction and the distribution of reproductive traits. The main part describes the physiological course of reproductive traits and the influences that affect them. Furthermore, pregnancy and parturition, their physiological processes are described. Then, the factors that influence the reproductive performance of breeding sows are described. In the final part, the bachelor thesis deals with the current level of reproductive indices in the Czech Republic.
Israel's population policy
Benešová, Tereza ; Šťastná, Anna (advisor) ; Fialová, Ludmila (referee)
The thesis deals with the population development of Israel in the context of individual population policy measures between 1948-2022. The basic concepts of population policies and theories are anchored in the literature review. Specific measures that have been taken in Israel are also discussed and the issue is placed in a political and historical context. The literature review is followed by an analytical part that examines indicators of fertility, migration and assisted reproduction in the context of Israel's birth and immigration policy. In the conclusion, space is also devoted to the possible future direction of Israel's population policies. In the results of the thesis, the influence of a specific measure on population development is not clear, but the partial connections between Israel's population policy and population development are primarily pointed out. Keywords Israel, population policy, population development, fertility, migration
Effect of cancer therapy on fertilization parameters in testicular germ cell tumour patients.
Kruf, Annabelle Elisabeth ; Vondráková, Jana (advisor) ; Nevoral, Jan (referee)
Testicular germ cell tumours (TGCTs) are a rare type of cancer. It is the most common type of cancer in the age group of 15-35 years. The consequences that TGCT and the treatment of this disease impose to these young men in terms of sperm parameters and fertility is yet unclear. This study involves 84 semen samples from 46 patients sorted in three time groups - before treatment, 3 months after the treatment and 6 months after the treatment. Several sperm parameters were studied and compared within the three time points. Adding on to this, the study takes two patients with complete set of semen samples and studies them individually. The results mostly show great differences in patients and this study underlines the individual characteristics that need to be taken into consideration when it comes to patients' fertility journeys after battling TGCT. Sperm viability, concentration, apoptosis, DNA damage, acrosomal integrity and leukocyte concentration nor histone modification evaluation showed any significant changes between said groups. DNA damage was correlated to the level of acrosomal permeability. IgA antibody levels rose significantly in samples after orchiectomy. IgG antibody levels did not show the same trend. A novel approach was optimized and applied using JUNO and FcRL3 double transfected...
Changes in fertility characteristics and population structures in Southern and Eastern Europe: interrelationships and contexts
Kahoun, Lukáš ; Šídlo, Luděk (advisor) ; Kurtinová, Olga (referee)
Changes in fertility characteristics and population structures in Southern and Eastern Europe: interrelationships and contexts Abstract There were significant changes in fertility characteristics and population structures between 1970 and 2020 in both Southern and Eastern Europe. This transition is associated with the concept of the second demographic transition by some authors. An unconventional methodology is used for its research in this thesis. Two three-dimensional scatter plots, which at the same time form unit cubes, are constructed using three selected indicators of both changes (fertility and structures). The distance between individual observations by examined years is interpreted as the dynamics of the transition of the given decades. The dynamics values from both scatter plots are then analyzed and compared with the others. The results show that changes between fertility characteristics and population structures are related to a certain extent, but the observed differences between regions or the specifics of some states complicate the generalization of this relationship. These conclusions also agree with the literature published so far. Key words: fertility, population structures, second demographic transition, data visualization, three-dimensional scatter plot Character count: 149 752
Estimating willingness to pay for increasing probability to conceive
Kolářová, Natálie ; Ščasný, Milan (advisor) ; Šťastná, Lenka (referee)
The purpose of the thesis is to analyze preferences for increasing the probability of conceiving. Willingness to pay for increasing the probability of conceiving is estimated using the private good scenario and a new complex of vitamins and minerals as the contingent product. Specifically, we use the discrete choice experiment with three attributes: the increase in the probability of conceiving, the number of months of trying to conceive from when this probability will be increased, and the cost to be paid for this product. Data are obtained through a stated preference survey conducted in 2014 in four European countries (the Czech Republic, the United Kingdom, Italy, and the Netherlands). We estimate a mixed logit model, allowing for unobserved preference heterogeneity. We find that people are willing to pay to increase a female's probability of conceiving, and their willingness to pay is higher after 12 months of trying to conceive when one is becoming infertile. Respondents are willing to pay for increasing the chance to conceive even during the period when they are not diagnosed as infertile, i.e., from 6 months of trying to conceive, except in the Netherlands. Italians are willing to pay the most, while Dutch are willing to pay the least. By controlling for the main characteristics of...
Influence of avian Plasmodium on their hosts
Dulavová, Kristýna ; Svobodová, Milena (advisor) ; Vinkler, Michal (referee)
Avian malaria parasites of the genus Plasmodium are unicellular (and intracellular) protozoans of the group Haemospororida, using a blood-sucking insect (mosquito) as a vector and a bird as a vertebrate host. The effects of this disease, together with avian pox, have greatly influenced endemic populations of Hawaiian birds after introduction of a suitable vector to the islands by a human hand, leading to a drastic extinction of bird species; most of the remaining Hawaiian endemic species are now endangered. Apart from that, avian malaria is distributed nearly all over the world, infecting a variety of different hosts. This thesis is focused on the influence of avian malaria parasites mainly on their avian hosts. The most severe patologies caused by Plasmodium are associated with blood stages causing serious anemia in birds. More pathologies are connected with exoerythrocytic stages in the endothelial cells in various organs and are accompanied with external signs such as lethargy, respiratory distress, weakness, inappetence, sometimes weight loss and so on; different plasmodium species-bird host combinations have different outcomes. An interesting issue is the emerging tolerance against avian malaria in Hawaii Amakihi (Hemignathus virens), a species occupying low elevation areas of Hawaiian...
Population development of district towns in the South Bohemian Region
Votavová, Kateřina ; Šídlo, Luděk (advisor) ; Brázová, Kateřina (referee)
Population development of district towns in the South Bohemian Region Abstract The aim of the thesis is to analyse and describe the population development in the seven largest cities of the South Bohemia Region in the period 1997-2021. The thesis draws on individual and anonymised data to analyse the basic demographic indicators of fertility, mortality and migration. The work compares the cities with each other as well as compares the development with the national average. Among other things, the thesis examines the development documents of cities, especially their efforts to address demographic issues. Moreover, the analysis shows that most cities, with the exception of Písek, tend to lose population, but with different intensity and timing. In all cities fertility intensity and mortality evolve similarly with minimal differences. Finally, the city management is currently trying to address demographic issues in most cities. Keywords: population development, towns, fertility, mortality, migration

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