The thesis focuses on the issues concerning development of reproductive behaviour in the Czech Republic and basic socio-demographic and economic indicators which affect this behaviour. The main aim of the thesis is to identify key socio-demographic and economic factors which affect attitudes and reality in the reproductive behaviour in the Czech Republic. It describes changes in the demographic structure and reproductive behaviour as well as changes in and consequences of population development. The analytical method used was a questionnaire and the data provided by this questionnaire were analysed with the help of word dependence and comparison. The questionnaire results proved that in ideal living conditions respondents would like to have more children than in reality. Reality is far from ideal and it is particularly caused by relationships between partners and by economic situation of respondents. However, most respondents prefer to have two children, which in terms of natural renewal of the population is not sufficient. It is important for today's demographic development to support an economically active population with three or more children. The questionnaire results are described in tables with a commentary and conclusion enclosed.

Impact of Marital Dissolution on Fertility in the Czech Republic Abstract The intention of this study is to analyze fertility of people who experience a divorce or husband/wife death in their reproductive age so it could be find out if these people have more or less children than people whose marriage persists until the age of 50. The conclusions are made based on the study of data from the second wave of Generations and Gender Survey which took place in the Czech Republic in 2008. The life table method (its output Survival Distribution Function) and Cox regression model are used for the analysis. Reproductive behavior of people who never enter into marriage, those who spend their reproductive age in the first marriage and those who experience the first marital dissolution before their 50th birthday is compared. The analysis of divorced and widowed people fertility is supplemented by evaluation of an effect that certain variables like age, number of children and age of the youngest child in the year of the first marital dissolution have on the follow-up reproductive behavior of these men and women. The situation about the partnership after the dissolution of the first marriage was identified as the most significant. People who find a new partner after their first marital dissolution have on average more...

The thesis is focused on a family behavior in the Czech lands during past six decades. A reader learns the meaning and function of the family. Further attention is paid to fertility behavior with the emphasis on marital and extramarital fertility. This task answers the question whether the Czech society still respects classic family behavior, first wedding and after that a baby, using the theoretical background and data from the Czech Statistical Office. Supported by the data analysis we can recognize that the conservative behavior subsides. Influence of women income respectively the highest reached educational level has not been demonstrated.

Fertility transformation in the youngest age from point of view of demography Abstract This thesis aims at evaluating fertility transformation in the youngest age in the 20th century and at the beginning of the 21st century in the Czech Republic. Circumstances and causes of transformation of fertility in this age group of women are based on usage of theoretical concepts related to fertility issues in the youngest age. The chosen period shows a number of changes in socioeconomic, political and legislative way. The transformation of the society in 20th century had influence on fertility level and fertility timing. Form of motherhood in the young age has changed also. Differences of characteristics of fertility in youngest age influenced by social evolution were shown on example of comparison of young women fertility evolution in Czech Republic, France and Romania. It approves that fertility level in the youngest age can be the driver of the social progression. Keywords: fertility, Czech Republic, young mother

Reproduction and milk production are considered to be the main factors influencing the whole economy of cattle breeding. We have been monitoring the worsening reproduction related to cattle breeding for a long time. The introduction of synchronization protocols into reproductive management is a posibility to improve reproduction. The aim of my work was to detect the success rate of insemination after rut synchronization on the basis of the data analysis and to evaluate reproductive indicators. The monitoring was performed from January 2017 to June 2018. There were monitored 310 breeding Holstein cows with the yield level of 10 335 kg of milk. The data were obtained from the zootechnical records and the Farmsoft Program. The breeding reproductive level was poor. Here are following values of reproductive indicators: insemination interval - 63 days, service period - 124 days, intervening time - 407 days, intersemination interval - 35 days, insemination index - 2,63 and pregnancy after the first insemination - 33,23%. That was only the insemination interval to achieve great results because breeding cows were involved into the synchronization protocol Presynch within 31 to 38 days after birth. It was detected that cows after the synchornization program Presynch got pregnant in 36,6% after the first insemination, whereas breeding cows being inseminated for the required rut became pregnant in 28% cases after the first insemination. The percentage of pregnancy in synchronizated cows after the first insemination is almost identical to the average in the Czech Republic (37,1%). Performing hormonal therapy within Presynch increased the reproductive costs in one cow by 211 Czech crowns.

The aim of the thesis was to analyse the reproductive parameters of the CLW and CLWxCL sows group in selected breeding group (CLW - Czech Large White, CL - Czech Landrace). Sows, compared to gilts, had more all born piglets born after 100 services (by 118 piglets more after 1st insemination and 116 piglets more after all inseminations). The CLWxCL sows gave birth to 0.10 more all born piglets and 0.21 live piglets more. The highest number of piglets, all and live, was born in the 4th parity. The correlation coefficients between the age at the 1st service and the number of all resp. live-born piglets were low. Only 0.1 live piglets were born to CLW sows with weaning to service interval (WSI) from 5 days compared to WSI to 4 days. In CLWxCL sows, more live-born piglets showed sows with WSI to 4 days compared to sows with WSI from 5 days. The difference was higher, namely 0.8 piglet (P < 0.05). In the case of CLW and CLWxCL sows was confirmed a statistically significant difference in the number of live-born piglets between the sows with a gestation length from 116 days, up to 114 days and 115 days. Most of the piglets were born after AMD 74 boar and the lowest number after AMD 101 boar.

The study was performed on 24 localities throughout Socotra Island to approach the threatened tree species of Dendrosicyos socotrana (DS, Cucumber tree), its population and regeneration. 14 localities out of these localities contain DS individuals. This survey studied the land-cover classes of High Shrubland with Succulents, Low Croton-Jatropha Shrubland, Sparse Dwarf Shrubland, Wadies, Submontane Grassland, Submontane Shrubland, Frankincense Woodland, Dracaena Woodland, Urban land, Date Palm Plantation, and Frankincense Forest. Studied localities form an area of 96 square kilometres and 204 individuals have been found (excluding seedlings). The basic measurement of specimens had been taken (height, GBH, fertility and coordinates) as well as collected data about biotope site and regeneration. Regeneration occurred approximately on 36 % of all localities. Dendrosicyos socotrana could be fertile on height of 2 m. The estimation of total number of DS population on Socotra Island could be 8 113 individuals. It is conspicuously showing that High Shrubland with Succulents and Wadies are the best habitat for Dendrosicyos socotrana, the reason is that the northern-slopes and wadies protect Dendrosicyos socotrana from the strong monsoon wind in the Island. As for others land-cover, DS species prefers wind-protected locations. In conclusion the DS population are decreasing in whole Island and I am suggesting to seek for a solution for this unique species.

The aim of this study is to evaluate the reproductive and productive indicators of Landrace pig breeding. Sows of basic herd and breeding nucleus are divid into four groups according to the age of the gilts, sows at risk litters, the sows producing litters and sows for 6 or more litters. Reproductive indicators of sows, fertility (number of piglets born, number of piglets born alive, number of piglets weaned) and milk production, are evaluat. Comparing the results of the observed Landrace pig herd population in the Czech Republic, it found that better results are achieved by breeding Landrace population. The achievement in the observed enterprise is 15.8 ? 2.2 units of all piglets born in a litter, 14.4 ? 2.3 units of piglets born alive per litter and number of piglets wean per litter is 9.4 ? 1.6 piglets. Population reaches fewer piglets born in a litter and more of the preserv. This proves that breeding must seek to reduce differences between piglets born and preserv. This is relat to milk production of sows, which is also below the average for the whole population. Furthermore, the results of the performance of gilts and male pigs according to the methodology for field testing are evaluat. For performance testing the average backfat thickness (mm) of lean meat (%) and average daily gain (g) in the unified testing are assessed. Population achieves better results in the proportion of lean muscle in both gilts and male pigs for both monitoring years. The greatest difference is reach in 2013 with male pigs and that is about 7%. Backfat thickness is on average about 1 mm higher than the reference breeding population. Nowadays the interest in breeding animals is decreasing. In 2013, 3 male pigs and 88 gilts were sold.

This work is focused on the evaluation of productivity and growth and phenological phases in the planting of Cornelian cherry. The evaluation was conducted on the experimental plot ŠZP Žabčice. Refraction measurement and level of vitamin C were done in the laboratory of the Institute of Plant Breeding and Propagation. Obtained values were statistically processed and evaluated and were sorted into tables and graphs and subsequently discussed in the text of the thesis. Photographs were taken during observation. These values allow selection of the most suitable type of variety for cultivation and subsequent processing. Findings also allow selecting the variety with the largest fruit, variety with highest crop yields, varieties of fruits richest in vitamin C or variety with the largest bush growth. Jolico variety yields the largest single fruit while Vyšegorodský variety offers highest yield of crop. Highest content of vitamin C is found in Fruchtal variety. Vydubecký variety is suitable for a rapid wood growth. Cornelian cherry is a versatile plant that can find its application in landscaping either for its heavy and hard wood or for its fruit which tastes well and is nutritionally interesting. Plant's resistance to diseases and pests is also significant. Cornelian cherry is not yet very common as a fruit in our country, however; this can change not only due to better awareness but also due to new plant varieties.

The objective of this thesis is using a series of field investigations to determine the status and potential of natural regeneration of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) on the area of interest "The Forests of The City of Brno, Corp.". Based on the results of field investigations we can deduce on fertility of Douglas fir, status and parameters of natural regeneration, intervals of seed years and dispersal possibilities of natural regeneration from the parent growth. The work consists of two different parts, theoretical and methodological (practical). The first part analyses theoretical aspects of the solved issue and the second part is devoted mainly to the methodological procedures. Of the 100 analyzed growths was located 86 % on nutrient habitats. In 77 % of cases occurred in the growths Douglas fir as wood disseminated. All growths over 80 years are spawning: 33% slightly, 58% moderate and 9% richly. Without natural regeneration was recorded only 17 % of growths. The height of Douglas fir grow under vegetation of 1,3 meters can be expected in the age of 11--12 years.