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Synchronizace říje plemenic skotu a její úspěšnost
SUKOVÁ, Denisa
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.
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Evaluation of the level comliance with the zoohygiene and selected indicators of welfare in agricultural operations
ŠVEC, Radim
This thesis focused on monitoring and analysing selected parameters of assessing the level of zoohygiene, comfort and welfare of breeding dairy cows housed in four monitored stable obejct. Survey, evaluation and registracion of data related to the following indicators; health status of hooves, the incidence of mastititis and reproductive performance, were performed. A reference group, wich was appropriately prepared by a local zootechnician, who knows the farm enviroment, was set to find the meeded data and they were then monitored with the help of evidence of zootechnical and veterinary records. The research has confirmed that problems with hooves and consequent lameness occours when several factors are not kept. Conversely, compliance and respecting the needs of diary cown bring very positive results. The claim that there is an increased incidence of mastitis in the grate, litter housing has been disproved.
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