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Current iodine supply to livestock
LÍKAŘOVÁ, Kristýna
The bachelor thesis deals with the evaluation of the current iodine supply of selected species and categories of farm animals based on it is content in milk. A total of 5 individual milk samples from cows from 5 farms and 5 pooled samples, 6 individual milk samples from goats from 2 farms and 1 milk sample from a mare were analyzed for iodine. The samples were collected in farms in the South Bohemian Region, Vysočina Region, Pardubice Region, Plzeň Region and Hradec Králové Region in 2023. Iodine in milk samples was determined using the Sandell-Kolthoff spectrophotometric method.
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Specifika reprodukce koní
Maňasová, Michaela
The bachelor thesis deals with the issue of specifics in the breeding and reproduction of horses. The theoretical part firstly describes genital organs of mares as well as stallions and the differences from other species of livestock. Next the thesis characterizes mare’s sexual cycle and methods of horse reproduction regarding their advantages and disadvantages. The next section of the theoretical part gives attention to specifics of the whole reproductive cycle and its comparison to other livestock. And the final part of the theoretical part provides the options for affecting the mare’s sexual cycle. The practical part covers the evaluation of reproductive traits of horse breeding in Hřebčín Vlachovice between 2015 – 2018 period. During these reproduction seasons, there were two stallions – Age of Jape and Ray of Light. It is looked on indicators as the amount of covered and pregnant broodmares, fertility of stallions, effectivity of mare’s getting pregnant or mare’s ability to get pregnant after having a foal. As the last but not least factor watched in the thesis is using hormonal products at mares.
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Faktory ovlivňující vnější projevy říje a zabřezávání klisen
HOUŠKOVÁ, Zuzana
The aim of the work was to process facts from Czech and foreign sources about the reproduction of mares. On the basis of the information given in literary sources, monitoring was carried out including monitoring the manifestations and course of estrus, selected characteristics of mares such as BCS, age, current use of individual mares or possible hormonal stimulation. 62 mares in the age range from 3 to 24 years were included in the monitoring. The monitored mares were of various breeds, mares with a sports or hobby career were included, but also mares whose use was primarily for breeding. The aim of this work was to assess the influence of individual selected factors on the subsequent pregnancy of mares and to assess the most suitable combination of characteristics and manifestations of estrus in mares.
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Hodnocení plodnosti hřebců a klisen v podmínkách přirozené plemenitby
ZOUBKOVÁ, Lucie
The bachelor's thesis "The Evaluation of fertility in natural service stallions and mares" focuses on the fertility of natural service stallions and mares and the results of breeding thoroughbred horses in the reference period. It analyses all forms of natural service that can be used in the horse breeding, the reproduction of wild horses, advantages and disadvantages of this method and its use in the Czech Republic. The study describes sexual behaviour of horses that is supressed by the modern methods of reproduction, unlike natural service.
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Dostupnost chladnokrevných hřebců pro zapouštění klisen v přirozené plemenitbě
BALOUŠKOVÁ, Lidmila
The diploma thesis deals with the availability of cold blood stallions for mating with mares in natural breeding. There are currently three breeds of cold blood horses in the Czech Republic. It is a Noriker horse, a Silesian horse and a Czech-Moravian Belgian horse. In 2020, the total number of horses in the Czech Republic was 92 172, of which 1 352 were Noric horse, 1 365 Silesian horse and 1 971 Czech-Moravian Belgian horse. A total of 132 cold blooded stallions and 532 cold blooded mares were included in the monitoring, which were reproductive active between 2017-2019. In stallions, the age structure, the development of basic body dimensions, the proportion of original genes, the level of performance achieved and the location of the stallion, i.e., the breeding station were monitored. In the case of cold blood mares, the location of the mare was monitored, which was important for determining the distance to the selected stallion. Finally, an economic evaluation was performed
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Úspěšnost inseminace klisen ve vztahu k době ovulace
VACEK, David
Mare rate of conception is influenced by many factors. Apart from the impact of the mare and the stallion, the breeder also represents one of these factors. The aim of this master's thesis is to assess the impact of the insemination dose storage, the period between the insemination and ovulation and the mare's age on the actual conception. The results are based on the assessment of forty-nine Czech Warmblood mares from the farms of Újezd and Zduchovice. Their conception rate was monitored throughout the years 2019 and the assessed affecting factors include the kind of semen storage (frozen or fresh chilled semen), the mare's age and the period between ovulation and insemination. The initial assumption that the sort of semen storage (p-value > 0.05) influences the rate of conception has been disproven because the conception rate for frozen semen was 52 % and it increased only by 6 %, amounting to 58 % in total for fresh chilled semen. As far as the age factor is concerned, there was almost no difference (p-value > 0.05) in the ages of gravid and non-gravid mares that were supposed to conceive during their first rut. The average age of pregnant mares is 10 (n = 19), therefore only one year more in comparison with non-pregnant mares (9 year, n = 30). The influence of the period between the insemination and the ovulation on the conception rate has not been proven either. While being monitored, no period between the insemination and ovulation exceeded the recommended length. In conclusion, the breeder can lessen the impact of harmful factors on the conception rate, for example the mare's age, the period between insemination and ovulation and the kind of semen storage.
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Faktory ovlivňující zabřezávání a trvání gravidity u Starokladrubského koně
Malinská, Martina
Diploma thesis is concentrated on analysis of selected factors affecting gestation length in mares of warmblood breed Old Kladruber horse. Gestation length was significantly affected by the month of conception, the month of foaling and the year of conception. The age of mares in the time of conception or foaling did not influence gestation length. Even the sex of foals or alive and dead foals did not significantly affect gestation length. In conclusion, gestation length in mares is affected by a large number of factors and not all of those have been discovered yet. The knowledge of these factors is very important for the most accurate determination of parturition date.
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Vyhodnocení růstu folikulů u klisen
Baková, Lenka
The mare is in our geographic region a seasoned polyestrial animal. Due to human care, some mares can also suppress seasonality. Many factors, both internal and external, are responsible for folliculogenesis, or the development of ovarian follicles. Folliculogenesis is hormonal controlled. It is significantly influenced by the photoperiod, which, by its prolongation, stimulates the production of the relevant hormones. Both can be influenced by both. However, there are other factors that influence this process. This work was mainly focused on the influence of temperament, environment, length of oestrus processes, previous pregnancy, age and stress. In this work, it was found that, for example, in the case of cold-blooded mares, the size of the ovulatory follicle was greater than that of the thoroughbred mares, or that in younger mares the average size of the ovulatory follicle was greater than in the oldest group.
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Vyhodnocení vybraných hřebců českého teplokrevníka podle kvality dcer
Vlášková, Tereza
The diploma thesis deals with an evaluation of chosen Czech warm-blooded stallions based on the quality of their daughters. A collection of 474 mares which are registered in a Czech warmblood studbook and passed a basic performance test of three years old mares was chosen. Following information was collected: breed, birth year, inclusion year, father, jump index of father, plus points for class, type, exterior, performance and jump index. Collected data was processed in programs Microsoft Excel 2016 and UNISTAT 6.5, with the use of a general linear GLM model with a fixed effect. The GLM model was used to analyse the influence of individual factors on the dependent variables (class, type, exterior and performance of the mares). Subsequently, in case of statistically significant influence of the observed effect, the differences between monitored individuals were determined by multiple comparison according to the Tukey-B method and Scheffe method. For the class and exterior, the best rated mares were after the stallion 2997 Aristo Z (x̄ = 7,78 points). The best mark for category were also given the mares after father 2997 Aristo Z (x̄ = 7,90 points). The most performing and stable offspring has the stallion 1028 Manillon Rouge (x̄ = 7,94 points). Best jump indexes have again the daughters of the stallion 2997 Aristo Z (x̄ = 123,2 points). Through the general linear module, it was found out that the father has statistically highly conclusive influence on the class, exterior and performance of daughters (mares), since P ≤ 0,01. Other factors do not have statistically conclusive influence on dependent variables.
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Zhodnocení reprodukce koní v Hanáckém jezdeckém klubu Litovel
Buláková, Pavla
Reproduction of horses is very important because there is not much descendents from breeding mares. This is the reason why breeders gaining knowledge of the mare’s sexual cycle, choosing qualite and suitable stallion for exact mare and also in mating technique. In these days prevails insemination over natural breedeing because it has many positives in economic and hygienic ways. The main positive is the possibillity to choose any stallion we like, insemination doses are bringing to Czech republic from all over the world, so we can use sperm from greatest stallions. Breeders try to improve current breeding of horses and to product quality foals with a prerequisite for sport. Even if improvement efforts are big it is not always easy. It is necessary to determine the correct time of insemination to get mare pregnant and this is the main why is important to know the sexual cycle. There are other factors important for pregnancy as age, stress, physical stress, health condition and nutrition. Also there is risk of complications during labor wich are quite often and they reduce the chances of successful breeding.
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