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Identification and isolation gene encoding peroxiredoxin, detoxification enzyme involved in antioxidant defense of hard tick Ixodes ricinus.
HAVRAN, Jiří
Antioxidant enzymes play an important role in protection against the oxygen radicals generating during aerobic metabolism, as well as in defense against host immune responses. Peroxiredoxin isolated from the hard tick Ixodes ricinus belongs to 1CysPrx group of peroxiredoxins. It is expressed in all stages of hard tick (larva, nymph and adult) and in all tissues examined. The full gene (EU373821) is 756 nt long and consists of 251 amino acids, encoding 27.94 kDa protein. This is the first report of isolation of detoxification enzyme (peroxiredoxin) involved in antioxidant defense of hard tick Ixodes ricinus.
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Analysis of utility and fertility of a cow herd of Holstein breed
ZETKOVÁ, Jana
The point of the work was to make an analysis of milk production an and fertility and to attest dependence of milk production and fertility in the holstein cattle herd. Background materials were acquired especially from milk production control and cattle accompanying documents. Data of 251 dairy cows were worked up. Big problem of the high producing dairy cows is the low fertility. That is why the work was focused on analysing of milk production and fertility index. Service period, insemination interval and interval were analysed out of the fertility index. Milk production, proteins and fats percentage content represent the efficiency. The results show the high selection of cows out of the herd. It result shows from a number of included heifers. Most frequent reasons of selection are health condition, low milk efficiency and fertility disorders. Average efficiency in control increases. On the other hand the protein contest in milk is weak. A breading aim 3,3% was achieved only in year 2003 (3,32%). Milk production increases from the first to the third lactation. Milk production is decreasing from the fourth lactation. Fat percentage content increases to the third lactation, then it stagnates. The protein content goes down with number of lactation. Required interval length to 400 days is exceed in all lactation. Service period is to high regardless of lactation number. Insemination interval increases to the third lactation, then it decreases, but it is nonconforming all the time. The results show that fat and protein content decreases with milk production. The high milk production was reached on cows calved in autumn (8920,77 kg) and in winter (9231,48 kg). Data of cows calved in spring and in summer are almost the same. The results evidence general rule, that fertility decreases with increasing milk production.
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Zoological days Brno 2009
Bryja, Josef ; Řehák, Z. ; Zukal, Jan
Konference se zúčastnilo cca 450 účastníků, z toho více než polovina byla studentů. V 15 přednáškových blocích (ve třech paralelních konferenčních místnostech) zaznělo 104 přednášek, z toho 5 plenárních. Během čtvrtečního dopoledne mohli účastníci konference zhlédnout rovněž 176 posterových prezentací.
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Česká centra, jejich vývoj a role v rozvoji obchodních vztahů
Němečková, Jitka ; Mišovská, Soňa (advisor) ; Sztogrynová, Miroslava (referee)
Tato práce představuje organizaci Česká centra, objasňuje její funkci, zařazuje ji do systému zastoupení České republiky v zahraničí a prosazování jejích zájmů, popisuje hlavní i vedlejší oblasti činnosti Českých center, podrobně rozebírá jejich aktivity v oblasti podpory obchodu a navazování mezinárodních obchodních styků, nastiňuje jejich vývoj od jejich vzniku z kulturně - informačních středisek přes současnost až k jejich možné budoucnosti.
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