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Využití aktivometrů v řízení reprodukce holštýnského skotu na ŠZP Žabčice
Šalšová, Agáta
This bachelor thesis focuses on heat detection in cattle. The thesis introduces the description of the female reproductive system, estrous cycle and its neurohormonal control. It further discusses heat and its signs – primarily an increased physical activity and what it is affected by. It explores different models of activometers; more specifically an activometer model Ovalert, which is currently used in a school farm Žabčice. The thesis concludes that activometers are very beneficial tools for breeding. They significantly facilitate work and save time. They can also duly detect and alert you to certain health conditions related to the observed parameters such as decreased activity, rumination intensity or feed intake.
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Zhodnocení inseminace u ovcí s využitím kvality cervikálního hlenu
Čaky, František
The aim of this thesis is to evaluate the quality of cervical mucus in relation to insemination. This thesis describes the different methods leading to the detection of the optimal time for insemination, i.e. estrus detection, methods of sheep synchronization and methods of sheep insemination. In the practical part, reproductive indices related to insemination, cervical mucus arborization and from this determination of the optimal time for insemination and the amount and other properties of cervical mucus were evaluated.
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Analýza stáda dojnic ve vybraném chovu pomocí software AfiFarm
Šiklová, Veronika
The aim of bachelor thesis Analyse of beef cattle in chosen breeding by software Afifarm was to evaluate usage, available information about a herd and reliability of software AfiFarm in the farm Agromeran a. s. Trhonice. The literature section includes characteristic of Czech Fleckvieh cattle and Holstein cattle because these breeds are kept in the farm. Further, it is focused on reproduction, fertility, a rut, insemination and milking program AfiFarm. The practical section includes the description of the observed farm, a summary and an evaluation of gained information from the software AfiFarm. Next, it was carried out observation of a software success in detection of a heat. It was carried out during November, December 2016 and January 2017. Finally, the bachelor thesis shows the evaluation of the obtained information. The average daily milk production was 18,1 kg per cow and total milk production was 2 383 603 kg in 2016.The service period was 118 days, the intervening period was 387 days and days in milk was 331. Next result was toshow a percentage assessment of suc-cessful and unsuccessful detection of the heat. The average success of detection of the heat was 84, 86 % while false alarm was 15,13 %.
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Reprodukční a biotechnické metody využitelné v chovu dojeného skotu
Talácko, Pavel
The bachelor thesis describes the most frequent and best known biotechnical methods used in breeding of dairy cattle. It collects insemination methods useful in cattle breeding and familiarizations with their practical use. Because the rectal method is the most commonly used in practice, the most emphasis is on it. Next is an embryotransfer, which is described in the work, gets the embryo, the evaluation, the conservation until the transfer. This methods is closely related to superovulation and synchronization. Both of these methods are also described here. The other methods mentioned are in-vitro fertilization and sexed sperm, which is relatively often used today. All these methods show theirs advantages but also theirs disadvantages. In the next part of the thesis goes towards detecting the estrus. First of all, it describes the estrus and their symptoms. It is important monitor of estrus, which is of course also mention in the work. We can also find the tools that helps detect the estrus. Another part of this work is related reproduction indicators. The calving interval, servise period, insemination interval, insemination index, percent of pregnancy after 1. insemination are described here. Conclusion presents current values of these indicators in the Czech Republic and their comparison with abroad.
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Vyhodnocení přesnosti vyhledávání říje a zvýšení míry zabřeznutí krav využitím systému zaznamenávajícího pohybovou aktivitu
BUREŠOVÁ, Michaela
In connection with growing modernization of technological systems in milk cow farming it comes to progressive innovations within monitoring motor activity. The motor activity is besides other things connected with the possibility of searching for estrus and detecting and eliminating false estrus. It is possible to suppose, that it becomes evident with increased accuracy of searching for estrus and bigger success rate by cow fertilization. It was discovered, that SCR system helps to improve reproduction. By reproduction indicators favourable values were recorded, namely: days open - 85 days, calving interval - 420 days to first service - 121 days. This year results get considerably better if compared with results from last years, when SCR system was not implemented. Success rate of insemination has risen by 36 %. It is evident, that measuring of motor activity enables us to precisely determine the right time of ovulation and therefore it increases the percentage of successful fertilization.
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Results of dairy cows´ conception rate according to type of heat detection
Němečková, Lucie ; Stádník, Luděk (advisor) ; Ducháček, Jaromír (referee)
The aim of this work was to elaborate literature review on the issue of cattle reproduction, factors influencing fertility and describe the various types of heat detection. The work also includes practical observations, which was based on comparing the results of its own conception of cows depending on the type of heat detection. The hypothesis was that the results of visual observation will have lower levels of reproduction than heat detection using measuring physical activity.
The comparison was carried out within the company ZOD Roztoky Kruh, which is located in Roztoky u Jilemnice and enterprise Zetka Strážník, a.s. in Studenec u Horek. Information about the results of reproduction and performance were collecte in the two companies taken from their Analysis of herds registered in the stud book of Czech Fleckvieh and the Results of milk recording system during the period 2012 to 2015. Consequently, the results of reproduction were evaluated graphically for each business separately and then they were compared for both companies between themselves and within the whole population. As selected reproduction indicators for comparison, I selected the number of pregnant cows after all inseminations, insemination interval, service period, insemination index and length of the calving period.
The comparison showed that the two companies is different in nearly all indicators of reproduction, except calving period, the length of which was in both companies almost the same, on average from 394 to 396 days. In ZOD Enterprise Roztoky Kruh faced with increasing length of calving period, which varies in length averaging about 99.9 days, which is considered inconvenient. In contrast, the length of insemination interval was shorted by an average of 8.5 days from the start of monitoring. The number of pregnant cows after insemination was on average around 52.6%, which is 4.7% less than in the enterprise Zetka Strážník, a.s., where it achieved 57.3%. The index of insemination for cows was an average of 1.75. The enterprise Zetka Strážník had an average length of calving period 94.9 days. Insemination interval was prolonged by an average of 5.6 since 2012. The index of insemination for cows had an average value 1.55. This indicator is not influenced by the type of heat detection.
The hypothesis was confirmed even though the difference was not too great. Enterprise, which used measurements of physical activity to detect estrus, had better results in terms of reproduction. We can see that heat detection using visual observation is not as effective as using the detectors that detect physical activity in a stable all day.
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The Relationship between Motion Activity and Reproduction, Production and Health Parameters in Dairy Cattle.
CEPÁKOVÁ, Karolína
The aim of this thesis was to assess the relationship between motion activity of dairy cattle as measured using activity meters and reproduction, production and health parameters. For a one-year period the motion activity of 210 dairy cows was monitored. The results show that at the start of the rutting period there is a noticeable increase in motion activity (mainly during nighttime hours), specifying the exact start of rutting and the subsequent insemination. If the rutting period is detected accurately the percentage of dairy cows that are impregnated increases. Using activity meters improves reproduction indicators. Motion activity in sick cattle is generally reduced and after a warning the animals can be treated in time. The relationship between motion activity and production parameters is statistically inconclusive.
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