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Vliv změny technologie ustájení a výživy na užitkovost, složení mléka a zdraví dojnic
Kobalčíková, Lucie
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.
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The evaluation of culling rates of dairy cows in free range farming system
KLAP, Martin
This diploma thesis is focused on producing dairy cows and their culling rates. The general goal of this work was to compare and to evaluate the culling rates of dairy cows on 2 independent farms with free range farming system from 2012 to 2014. The diploma thesis provides the facts about culling rates in heifers and in cows till 90 days after calving, reasons to be culled, the age at culling, the age at first calving, parity when the cows were culled and the comparison of milk parameters at culling. The study was compiled from the detailed data about 474 dairy or combined utility cows. Farm Senagro a.s. Senožaty disposes pure-blooded cows or crossbreds with 51-100% of principal breed in blood. Only purebred cows are raised at farm Nečerák Vystrkov. It is obvious that culling rate markedly over 30% from all of the cows at farm Senagro a.s. Senožaty negatively influences profitability of this farm. Vice versa farm Nečerák Vystrkov belongs into category which accomplishes recommended value.
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Transport dairy cows from a tethering to a free housing and aspect of their welfare.
KLAP, Martin
This thesis is focused on the housing cattle with milk production. The aim of this study was to determine and evaluate selected indicators of welfare for the tethering and the free housing.The work was drawn from the data file, which contains information of 675 animals with dairy and dual purpose bred in two different types of farms. These farms are not connected together. Surveyed animals were purebred or hybrid with the representation of the breed in the blood from 50 to 100 %.According to the research and data collection it is clear that the tethering becomes unsatisfactory for all evaluated factors. Free housing clearly meets the conditions for the welfare of dairy cows.
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Influence of various systems on housing and breeding of dairy cattle
DUBOVÁ, Dagmar
The trend in development of new technologies and machinery in the area of agriculture and animal husbandry shows an increasing number of robotized operations. Such trend mostly appears in dairy cattle breeding, which has its logical explanation due to the fact that high ratio of human labour in milk production is more than obvious. The basic prerequisite for a successful utilization of milking robotic systems is to provide dairy cattle with sufficient quantity of top quality food and water as well as to ensure their welfare. The aim of the bachelor?s work was to compare the influence of both stanchion housing using a milking pipeline method and loose housing with robotic milking system on basic categories of dairy cattle behaviour, milk efficiency and reproduction. The observation itself was executed in each housing system for the period of 24 hours, during which an interval method with a ten-minute interval mode was used. Basic life activity of dairy cattle such as: feed intake, standing, lying and movement were monitored. All data were collected and assessed under running conditions on a private dairy farm owned by Václav Dub in Boubín near Horažďovice. The task was carried out in a reconstructed housing, where both systems are in operation. During the day, the dairy cattle remained mostly in a lying position, from which 50,33 % were kept in stanchion housing and 49,54 % in loose housing. When being housed in a standing position, 23,78 % of the dairy cattle paid attention to feeding and 27,05 % of dairy cattle were robotically milked. Standing position represented 25,89 % in stanchion housing and 19,31 % in loose housing. The movement was only monitored with dairy cattle housed in free housing representing 4,1 %. After the milk efficiency was assessed, there were some statistically significant differences (P?0,001) found in milked milk as well as in a kilogram of protein. With respect to reproduction, the length of the insemination interval was recorded showing 129 days when being stanchion housed and 95 days when loose housed. The length of the service period of dairy cattle in stanchion housing was 144 days while dairy cattle milked robotically showed the length of 109 days. All in all, it was proved that a free movement has a positive influence on the milk efficiency, fertility as well as the welfare of dairy cattle.
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