Vliv změny technologie ustájení a výživy na užitkovost, složení mléka a zdraví dojnic

The goal of the thesis was to evaluate the influence of stabling technology change and feeding during a stanchion barns (type K-174) reconstruction to free barn housing. The monitoring was carried out from January 2015 till February 2016. Based on the data obtained from the efficiency control for testing individual samples of milk (Milk Profit Data application) and values of pool samples during individual months were evaluated these parameters: total daily milk production, components of milk and health of dairy cows. In September 2015 were the dairy cows moved from stanchion barn into temporary conditions. There was the change of the feeding technique, housing system and milking. On the 16th December 2015, cows were moved into the newly renovated barn with a new milking house. After completion of the stress effects, there was an overall improvement of living conditions of cows. There could be seen significant improvement of the milkings hygiene which led to reducing CPM and PSB. It had an impact on cows health improvement. The change of the feeding technique also helped here. Former individually feeding components were replaced with mixed ration TMR. This resulted in a stabilization of rumen ambience, which reflected on the milk components balance. While in stanchion barn, results showed to diets errors and incidence of metabolic disorders such as acidosis, alkalosis, ketosis and diseases of mammary gland (mastitis). The results of the thesis document largely positive impact of mentioned changes - stabling technology, milking and feeding - on evaluated efficiency parameters, milk quality, milk hygiene and also metabolism of cows