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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Vztah SNP v genu pro leptin a parametrů vnitřního prostředí býků Českého strakatého skotu
 Lysáková, Eva
There is a lot of factors which has impact on quality of bovine meat. The aim of this thesis was to examine correlations between chosen SNPs in leptin gene and specific hormones and metabolites, which have influence on the meat quality and also complete health condition of beef. There were 99 bulls of Czech Fleckvieh cattle used for this study. The examined parameters were insulin, glucose, cholesterol, triacylglycerol, non-esterified fatty acids and betahydroxybutiric acid. There was shown no statistically signifiant correlation between leptin gene polymorfisms and observed parameters. Only proved correlation was between leptin and cholesterol and glucose. There is lot of other factors involved in changes of amount of these substances though.
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Ketolátky a volné mastné kyseliny v mléce vysokoužitkových krav
 NOVÁ, Hana
The aim of this diploma thesis was to evaluate the occurrence of ketones and free fatty acids in milk of high-yielding cows. Ketosis is a very common metabolic disorder in dairy cows resulting in reduced milk production, fertility disturbance and more frequent occurrences of other diseases. Ketosis is not only a serious health problem, but also an economic problem, that can be avoided by balancing the feeding dose respecting the physiological needs of energy delivery after birth and at the beginning of lactation of high-yielding cows. The monitoring was carried out in 2016 at Chyšná, which is one of the centers of Agribusiness Košetice a.s. Owerall were 1407 cows monitored during the 6 utility tests (from January to June 2016). The occurrence of subclinical ketoses was defined by the content of ketones in milk (acetone and beta-hydroxybutyric acid). Critical was the period of the first 12 days of lactation, when the occurence of subclinical ketoses was the highest, the occurence of this disease was lower than in other breeds. At Chyšná breeding, the low incidence of subclinical ketoses is mainly influenced by zootechnical work and by working with the feed consultant and the company for the production of compound feeds. As a precautionary process, regular feed analysis and examination of free fatty acids and ketones in milk can be recommended.
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