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Analysis of the causes for discarding dairy Holstein cattle
PROVAZNÍK, Pavel
The bachelor thesis analyses the causes of discarding of dairy cows of Holstein cattle. The aim of the thesis is to evaluate the most common causes, which lead to discarding of dairy cows from breeding in collective farm Trhový Štěpánov a. s. In this thesis were evaluated the results for 294 dairy cows in 2010. The underlying data were obtained from Dairyplan programm on the farm in Trhový Štěpánov, from economic analysis of ZD Trhový Štěpánov a. s. between 2008 and 2010 and from the annual report for each year. In 2010 there were discarded 294 dairy cows from total 864 pieces, that means 34 % of total number. Among causes of discarding of dairy cows belong low productivity, other zootechnical reasons, udder desease, fertility disorders, difficult births and other health reasons. The most dairy cows were discarded for other health reasons. To other health reasons belong liver desease, displacement of abomasum, paratuberculosis and bad condition of limbs. For these reasons it was discarded more than 57 % of dairy cows. The second most common reason was the fertility disorder with less than 16% of dairy cows and the least of dairy cows were discarded for the bad condition of udder and the other zootechnical reasons. Analysed causes of discarding of dairy cows in ZD Trhový Štěpánov a. s. mainly agree with results of control of productivity in the whole Czech Republic.
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Nutrition and feeding influence for economic parameters of milk production
DOLEŽAL, Tomáš
The thesis aims to evaluate the influence of nutrition and feed on the economic indexes of milk production in the Agriculture Cooperative of Borovany. The first part of the thesis focuses on the basic aspects of dairy cattle breeding including the physiological processing affecting their efficiency. The second part concentrates on preparing feed rations, describing the crucial elements specifying the level of milk yield and a particular way of feeding technique. The main factors influencing the economic indexes of milk production are desribed and analyzed in the pivotal part of the thesis, primarily the feed costs and quality. The objective of the thesis is to find out in what way the feed quality can affect the economic indexes of milk production in the observed years of 2007 and 2008.
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An evaluation the reasons of the discarding of dairy cows from the breed
ZNAMENANÁ, Lucie
The aim of the trial was to estimate the most common reasons of discarding of diary cows from the breeding. The major priority is to keep good health of breeding dairy cows and welfare conditions in the cattle breeding, because good health belongs among main conditions of economically successful milk production. Among the most common reasons of diary cows discarding belongs discarding for udder disease, for disorder of the reproduction, the discarding from another health reasons, for low yields and for old age. There were observed 519 out diary cows in the herd of Holsteins breed, where was observed reason of the discarding by genotype, the first calving age, the age of discarding by indicators of the reproduction and milk yields. Health reasons (36,22 %) and disorder of the reproduction (34,68 %) of diary cows were the often cause of premature discarding diary cows form the breed, which increased the cost for herd replacement and reduced average milk yields. For the improvement of breed economic there is therefore key improvement of reproduction indicators and health.
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The breeding of dairymaid from the viewpoint of noise burden
KAŠPAR, Michal
This thesis deals with the measuring noise and its impact on the breeding of dairymaid. The theoretical part collect general information about sound, noise and ear anatomy. It also deals with listing the most common sources of noise, instruments of noise protection, the impact of noise on health and interpretation of the rules, regulations, regulations and laws. The practical part contains the results of measurements in selected locations, their processing into graphs and evaluation.
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Influence of different factors for economic parameters of milk production
KLEINOVÁ, Anna
Evaluation of factors, which affect the selected economic indicators of milk production in specific farm, during two years, 2007 and 2008, was the aim of the work. The composition of dietary and its optimalization and feeding technology in stable were evaluated. The contents of basic elements, which affected the realization in every month, were set from the milk production on the basis of analyses. Indicators of reproduction are mentioned then. Evaluation of chosen operational economic indicators of milk production was based on dates about costs and revenues in selected stable. Mixed feeding ration is loaded twice a day and it is compiled in advisory way according to the laboratory analysis results of feed. It was balanced with a moderate abundance of nitrogen substances and solids in production cows and with a deficit of solids in feeding ration of very pregnant non-lactating cows in both years (about 9 %). The fat and protein contents were relatively fixed, with a decline in summer months. The limit for somatic cells was exceeded once (by 3 %) and so the TVC (by 36%) in 2008. Reproduction indicators showed annual improvement with the exception of the intervening period length. There came to reduction in number of coves on the 3rd and later lactations and to decrease of their longevity thus. Their own and purchased feed took share in costs mostly (33,3% in total). In 2007 the loss per litter of sold milk arose but the income moved to positive values after including all revenues. In 2008 a profit per litter of sold mild was reached the milk production reached 3,64% and the total income increased.
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Analysis of Czech pied cattle milk performance and fertility.
NÁVARA VOLFOVÁ, Kateřina
The main goal of all milk cattle breeders is herd making profit {--} the herd with good reproduction and consequent high production performance. Such a goal can only be reached if the herd is of quality genetic base. Cow{\crq}s milk performance is one of important factors influencing final economic results of milk production. The aim of this Diploma work was to examine lactation course and level as well as reproduction of high-performance Czech pied diary cows with regards to their genetic base. The diary cows (190 pieces) on lactation within 27th March 2008 {--} 13th June 2008 were examined. The examined cows were divided into three groups based on number of their lactation. These groups with cows on 1st, 2nd, 3rd lactation were further divided with regards to their genetic base into herd groups registered as C1 and C2. The sub-herd group C100 was isolated from C1 herd group. To each lactation group, 2{--}3 bulls were assigned based on the highest number of daughters in specific lactation group. Minimum criterion for bull assignment to lactation group was set on at least 5 daughters in the group. Reproduction performance was examined in these groups. The milk performance was evaluated based on 305 days usage, lactation curve persistence index and the lactation curve course in individual groups. The herd-group C2 with highest genetic base of diary breed proved the best results in all lactation groups with regards to reproductive performance. The best results were reached on 3rd lactation. The link between genetic base and reproduction performance of Czech pied cattle was not proved. Neither the link between genetic base and milk performance was proved. The influence of lactation number on most of examined factors was proved. The father{\crq}s influence on reproduction or milk performance was not clearly proved. However, the results may be distorted for lack of diary cows in groups examined under this criterion. Finally, the direct link between reproductive and milk performance was also not clearly proved. To summarize our results, we can state that the diary cows in examined herd were above the milk performance average of Czech pied cattle bred in Czech Republic. At the same time, the reproduction performance was just on average of Czech Republic.
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Detectionand assessment of noise loading during milking at milking shed.
KŮRKA, Jan
The work deals with the measurement of noise exposure on milking Alfa Laval revoling HBR, Agromilk Pelhřimov dovetail - trigon and milking robot Lely Astronaut A3. When measuring , it was found that the best in terms of noise level measurements published in milking robots with the runing of the feed wagon and measuring worst inside the cell with the milking robots.
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