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Zootechnické aspekty inseminace prasnic
Hájek, Petr
The aim of the bachelor thesis is to provide a comprehensive view on the issue of sow insemination and to summarize the current state of knowledge in this area of agricultural production. The bachelor thesis focuses on the description of insemination and on the zootechnical aspects that influence the insemination of sows. As insemination is the most used method of reproduction nowadays, emphasis is placed on the anatomy and physiology of the reproductive apparatus of the sow. Also described are the zootechnical aspects that affect insemination and how these factors influence it. In the last part of the thesis, the insemination itself and its methods of performance are described, discussing the advantages and disadvantages of insemination, including new options such as the semen capsule and its gradual release or a product to influence ovulation.
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Analýza reprodukčních ukazatelů plemene limousine ve vybraném chovu
Neubauerová, Ester
The aim of the bachelor thesis was to evaluate the reproductive indicators of the limousine breed in the selected breeding. For this purpose, monitoring and data collection was carried out in the period of 2021 and 2022. Subsequently, an analysis of selected reproductive indicators was carried out, which mainly included the percentage of conception (%), gross and net birth natality (%). Using the results, it was possible to evaluate the fertilization ability of breeding bulls that were used as part of natural breeding in breeding. In each year, all cows were divided into 3 herds and a breeding bull was then placed in each herd. As part of the monitoring, a lower percentage of pregnancy on average was found in a specific breeding for all monitored cows, namely in 2021 and 2022 (77.8% and 55.3%). This lower conception rate also resulted in a lower percentage of gross and net birth natality (74.1% and 51.8%). However, when looking at specific herds, significant differences can be seen with regard to the breeding bull used. As for the gender representation of calves born, in both years bulls prevailed over heifers.
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Českomoravský belgický kůň a jeho využití v minulosti a současnosti
Bartoš, Michal
The bachelor thesis describes the history and breeding of the Czech-Moravian Belgian horse breed. Its development, current rearing and areas of its use. This breed is also referred to as the Belgian horse, or the Belgian draft horse is the most common breed of cold-blooded horses. Part of the bachelor thesis is an analysis of the frequency of use of stallions in insemination. Stallions in Tlumačov and Písek stud farms were monitored. Data collection took place in the case of Tlumačov between 2009 and 2020. Data for the years 2012 to 2019 were collected in the Písek. The percentage of conception of these stallions was evaluated. There were 11 stallions working in the stud farm in Písek, with which a total of 176 mares were inseminated. The average conception in this stud farm is 58.86 %. There were 9 stallions in Tlumačov, with which 200 mares were inseminated, with an average conception value of 68.90 %
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Vyhodnocení úrovně zabřezávání skotu na farmě využívající řízené reprodukce stáda
Střecha, Filip
The aim of this thesis was to evaluate the level of mating on the farm using controlled herd reproduction. The evaluation of the level of pregnancy was carried out in dependence on the individual month of observation, the monitored parameters of milk from the performance control of individual lactations and the lines of fathers of cows. Performance data for January 2017 - April 2018 were used for the assessment. Based on the result, it can be concluded that the seasonal percentage is affected by the season. It has been shown that the percentage of pregnancy has decreased in the summer month. The significant decrease in the rate of mating was occurred with the increasing age of cows. The percentage of lactation, regardless of the order of lactation and the line of bulls, is negatively influenced by the milk yield and by the positive effect of the number of lactation days when embedded. To confirm the negative effect of milking yield on the breeding, the NEB breeders showed the highest milk yield and the lowest percentage of pregnancy. Significant fluctuation were occurred in value when evaluating individual indicator depending on the reference month. In the middle of the reporting period, the amount of urea in the milk had a positive effect on pregnancy. A similar result was obtained for the T / B ratio.
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Factors affecting reproductive efficiency in horses
Nová, Daniela ; Šichtař, Jiří (advisor)
This work is supposed to find out how particular factors effect pregnancy of mares. First chapter that presents into the theme is chapter about system of reproduction itself. Anatomy and physiology of system of reproduction of mare and stallion, hormonal control, oogenesis and spermatonesis. Following internal factors that effect the mare itself that means malfunctions of reproduction congenital or gained ( hormonal disfunctions and cysts for example) condition and age of the mare. Then summary od internal factors that influence reproduction of the stallion. This chapter is not very extensive because selection of stallions is on very high level, which means that stud stallions do not have any problems with reproduction. If there are any found the stallion is castrated and is not used in breeding any more. External factors will evaluate the importance separately for mares and stallions and will be consisting of climatic conditions, housing, nutrition, mating itself and sporting of the mare, frequency of sperm collections of the stallion and finally reproductive behaviour in horses.
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