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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Změny krevního obrazu v průběhu březosti, porodu a puerperia krav černostrakatého nížinského skotu, bílá krevní složka

Šnoflák, Milan January 1900 (has links)
No description available.
42

Vliv různých přípravků použitých při zaprahování na zdraví mléčné žlázy a složení mléka dojnic

Rajmanová, Martina January 2018 (has links)
The aim of the thesis "Researching Different Preparations during the Dry Period and their influence on Milk Gland and Dairy Milk Composition" was to analyze the occurrence of clinical mastitis in the first part of lactation (30, 60 and 90 days). Comparing the use of the antibiotic-containing product (Virbactan) and the noncontaining formulation (Orbeseal). Subsequently, the health of the mammary gland, the manifestation of clinical mastitis and the composition of milk from 130 cows of Holstein cattle were evaluated. Individual data on the dry period and data from performance controls needed for analysis were collected between 2016-2017. At 30 days of lactation, the effect of agents on protein content, fat, lactose, ketone, citric acid, free fatty acids, and fat-free fat in milk have proven to be effective. At 60 days of lactation, the same effect could be seen on ketones content, citric acid, free fatty acids, and dry matter. At 90 days, evident influence of antibiotic were concerning somatic cells, urea, ketones and dry fat. Influence on Mastitis was not proven.
43

Vliv plemene na množství, složení a vybrané technologické vlastnosti mléka dojnic chovaných v identických podmínkách jedné stáje

Müller, Luboš January 2016 (has links)
The aim of this study was to determine the effect of breed on the amount, composition and technological properties of milk of dairy cows kept in identical conditions on the selected farm. A total of 18 cows was observed, that is six samples of Ayrshire, Fleckvieh and Holstein cattle. The samples of milk were analyzed in the laboratory. The monitored indicators were: the amount of milk per standard lactation (305 days), fat, protein, non-fat dry matter, dry matter and density content, active and titratable acidity, the process and quality of rennet. The results were compared within those three breeds and milk recording for the year 2014/2015. The highest amount of milk produced the Holstein breed 8802 kg, followed by Fleckvieh 7591 kg and Ayrshire breed 7097 kg. The best parameters for technological use has the Czech Pied cattle milk. The Holstein and Ayrshire milk results were at the similar level. Fleckvieh cows showed the highest content of milk components and Holstein cows the higher protein content 3,21 % com-pared to Ayrshire. The Ayrshire cows produced milk with higher fat content 4,23 %. In kilograms of milk milked cows surpassed Fleckvieh about 451 kg of Ayrshire cattle and about 115 kg the national average. Holstein dairy cows produced about 744 kg of milk less than the national average. All three breed on the farm had higher fat content and lower protein content than the national average.
44

Užitkovost a plodnost stáda dojeného skotu / Utility and fertility of herd of milked cattle

NEJDLOVÁ, Emilie January 2012 (has links)
The aim of this thesis was to analyze milk yield and fertility in dairy cattle herds ? combined (Czech Pied cattle) and dojného utility type (Holstein cattle ) in the same breeding system. Further culling was evaluated, the cost of feeding a day and milk production. Observations were carried out in the company Podhoran Černíkov, as in the time sequence of zootechnical 2 years (1st 10th 2009 - 30 9th 2011). By tracking a total of 310 cows of which 47 cows of Czech Pied cattle C1 (C 100 %), breeding hybrids participation of Czech Fleckvieh with Holstein and Red Holstein breed C2 (C 75 ? 88 %) 53 pieces and C3 (C 50 to 74 %) 38 pieces, the cows of Holstein breed H1 (H 100 % ) 158 pieces, the unit crosses with Czech Holstein cattle piebald H3 (H 75 ? 87 %) 10 pieces, and H4 (H 60 ? 74 %) 4 pcs. Furthermore, the basic data set is divided according to genotype into two groups: 138 pieces of Czech Fleckvieh cows and 172 cows of Holstein breed pc. When evaluating the performance files were still divided into two in order of lactation on the first, second and more. Viewed indicators for evaluation of milk production were: number of lactation, lactation length (days), the amount of milk (kg), fat content (%), production of milk fat (kg), protein content in milk (%), production of proteins in milk (kg), lactose content in milk (%). The fertility parameters were observed: genotype, age at first calving (days), insemination interval (days), service period (days) and interval (days). Further culling was still considered, the cost of feed per day (CZK) and the cost of 1 liter of milk (CZK). When combined, mixed breed (Czech Pied cattle) and utility type (Holstein cattle) is necessary for herd management to allow for different feed consumption. Commercial breeding of different types in a joint breeding achieve different levels of performance for the benefit performance of Holstein cattle. Higher productivity of breeding Holstein cattle fertility and deteriorating indicators since these must be spend more time in searching for the rut to ensure reproduction of the desired level. A lower yield reaching Czech Fleckvieh breeding in specific terms the average results. Due to the achieved performance for both types of utility can say good job in management.
45

Užitkovost a plodnost u plemenic holštýnského skotu / Performance and reproduction of Holstein cattle

KAMENÍKOVÁ, Jana January 2011 (has links)
The aim of thesis was to analyze the milk efficiency and fertility of dairy cows of Holstein cattle breeding under intensive conditions. The examinations were made in the agricultural company ZDV Krchleby, a.s. during the year of 2007 to 2009. In total, 147 dairy cows were used for observation including 35 Holstein dairy cows (100% H, R 100%), in a group called - H1, 70 Holstein cows crossed with Czech spotted cattle (H 75 - 87%, R 75 - 87%) in group - H3 and 42 Holstein cows crossed with Czech spotted cattle (H 50 - 74%, R 50 - 74%), in group - H4. Furthermore, the basic data set was divided according to lactation into four groups: 1st lactation, 2nd lactations, 3rd lactations, 4th and more lactations. The main indicators for evaluation of the milk efficiency were the: milk quantity (kg), amount of fat in the milk (%), production of the fat in the milk (kg), amount of protein in the milk (%), production of protein in the milk (kg), content of lactose in the milk (%), persistency of lactation and lactation duration (in days). In terms of fertility, the following factors were evaluated: the cow?s age at first birth (in days), insemination interval (in days), service period (in days) and the periods between births (in days). The cows in the first group milked on average of 8945.03 kg of milk, the amount of fat was 3.66%, the content of protein was 3.32%. Cows in the second group milked an average amount of 8186.55 kg of milk, the content of fat was 3.77%, the amount of protein was 3.33%. The third group milked an average amount of the milk 8649.05 kg, the content of fat was 3.58% and the amount of protein was 3.26%. Differences between these groups were not statistically significant. From the reproductive indicators, statistically, the only most significant difference was the time in between births. The longest period in between births was measured in the first group - 576.22 days, in the second group - 487.38 days and in the third group - 480.95 days.
46

Storbritannien och biblioteken : en textanalytisk studie av brittiska nyhetstidningars skildringar av nedläggningshotade bibliotek under 2011 / Great Britain and the libraries : a text analytical study of british newspaper's depictions of libraries threatened by closure during 2011

Kristensen, Ann-Sofie January 2015 (has links)
This thesis is a study on how information about library closures are portrayed in media in four national British newspapers. The aim is to raise awareness that what is written in media usually consists of a frame around what is said. Also that the information that comes through is not always a depiction of reality but rather a reflection of it. Questions raised were: How are library closures being portrayed in media? What kind of functions in the articles can be seen as important for the library and it's future?The theories used are framing theory and Jochumsen, Rasmussen and Skot-Hansens the four space model of the public library from 2012. The method used was a conventional content analysis which resulted in four main themes that described the articles content in relation to the closure of libraries. The four main themes are Economy, Availability, Functions and Reactions of closures where the theme of Functions related well to the four space model. The results also show that choice of newspaper may have an impact on how users receive information about library closures.
47

Vliv ročního období na behaviorální projevy krav plemene Aberdeen Angus ve vybraném chovu

Svobodová, Tereza January 2014 (has links)
The diploma thesis deals with the influence of the season on the behavioral symptoms of aberdeen angus cows. Ethological monitoring was carried out on an ecological farm Chadimův mlýn, which is located in the Bohemian-Moravian Highlands. Monitoring was carried out from April to December 2013. It has been analyzed following behavioral symptoms: feed intake, water intake, stall, physical activity, lying, urination/defecation, sucking and comfortable behavior. By ethological monitoring, graphical and statistical evaluation it was found highly significant effect of the season on feed intake, stall, physical activity, lying and sucking. Inconclusive effect of the season has been detected in water intake, comfortable behavior and urination/defecation. In comparison with behavioral symptoms within days with the highest and lowest average air temperature, there wwas found high difference in the symptoms between standing and lying. Animals devoted most of time to feed intake (47,76 %), lying (22,02 %), stall (20,55 %) and physical activity (6,11 %).
48

Zhodnocení vlivu stájového prostředí a provozu funkcí stavebních konstrukcí u stavby pro skot

Pačísková, Michaela January 1992 (has links)
No description available.
49

Faktory ovlivňující výběr boxu dojnicemi českého strakatého plemene skotu

Večeřa, Milan January 2013 (has links)
The objective of the dissertation thesis was to analyse factors affecting preference of cubicle of Czech Fleckvieh dairy cows. Monitoring was carried in farm GenAgro Ricany a. s., a period of 12 months (June 2011 -- May 2012). The objective of monitoring was one section - one quarter of stable (n = 98 cows). Total of 47 040 observations were analysed. Statistical evaluation of data was performed by STATISTICA 10.0. In the sectionwas comprised of 103 comfortable stalls (cubicles) distributed into 3 rows.. Row A -- closest to feeding table (32 cubicles); row B -- in the midle section (33 cubicles); row C -- close to the side wall (38 cubicles). In all factors (number and stage of lactation, milk yield, number of arrival from milking parlour, temperature and humidity in stable and THI, height in the cross) was found significantly influence (p < 0,01) on preference of cubicle row. In evaluation of preference of boxes it was found out, that the lowest occupation rate in whole observing was in those boxes, which are on the edge of rows. Also lower amount of visits was noted in boxes, which are surrounded from more than one side by wooden partition separating space for lying (box) from waterhole. On the contrary mostly occupied boxes were those, which are located in the middle of box rows. Further higher preference rate of left side when lying was found in all observed influences, identically at both outer rows. On the contrary dairy cows preferred right side when lying in middle row.
50

Analýza asociace polymorfismu UASMS2 v genu leptin s intramuskulárním tukem a marblingem u skotu

Klementová, Kristýna January 2015 (has links)
The current trend in beef production is quality improvement. Meat quality is influen-ced by many factors, eg. genetic background, age, nutrition, sex, breed, environment, housing type, etc. One of these factors is the quality of beef and storage of intramuscular fat and marbling. Marbling has an effect on juiciness, tenderness and flavor of the meat. This paper describes the influence of UASMS2 polymorphism in the gene leptin to the quality of beef meat, storage of intramuscular fat and marbling. The study was conducted on 174 bulls of Czech pied cattle breed. For the determination of genotypes were used sequencing method. Based on the association analysis was detected significant effect on the quality of the meat and intramuscular fat deposition. The results of association analy-sis were compared with previously published scientific articles by other authors. The work includes a literature review for topic of candidate genes, the current state of the problem, significance and methods for studying genes and storing fat in cattle.

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