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Vliv zkrmování výlisků semen ostropestřece mariánského u potkanů a nosnic na játra a metabolismus těchto zvířat
Exnerová, Žaneta
This thesis is aimed to studying the effect of addition of milk thistle seeds cakes to the diet of rats and hens on metabolism, liver and possibly on the performance of these animals. Within two experiments (first on the rats and the second on the laying hens at the end of laying cycle) was verified the hypothesis that the addition of milk thistle seeds cakes to the diet affects the selected biochemical blood parameters, which are used for the detection of liver function eventually other indicators of metabolism and performance. It was situated 10 rats Wistar albino and 30 hens breed Bovans Brown into the experiment. The animals were always divided into two groups. The first group was experimental with addition of milk thistle seeds cakes (rats 40% in the mixture and layers 7% in the mixture), and the second group was a control. During the experiment was evaluated food consumption and the animal weight. In laying hens was also observed egg laying and evaluated quality characteristics of eggs. At the end of experiments, blood was collected from animals for biochemical examination focusing on the parameters of liver profile, eventually after culling were taken the internal organs (liver, kidneys). Results between groups were statistically compared by one-factor analysis (ANOVA) and the Scheffe test. Experimental results did not show significant influence feeding Silybum marianum seeds cakes on selected biochemical parameters of blood. In the monitored parameters, did not show significant difference in laying hens. In the experiment with rats was group fed with milk thistle proved significantly lower concentration of cholesterol, and significantly higher activity of alanine aminotransferase. There were no effects of feeding seeds cakes on the body weight of the animals or the weight of their internal organs. Evaluating the performance parameters of laying hens was however in the group which were included in the ration of milk thistle seeds cakes, found significantly higher egg laying and albumen height for eggs after break (P < 0.05). Based on the results we can conclude that feeding milk thistle seeds cakes for laying hens and rats did not affect the metabolism of animals in unequivocal terms evaluated on the basis of biochemical parameters of blood. Higher egg laying and density of egg white in laying hens which were fed milk thistle seeds cakes, however, suggest their potential positive impact on the performance and egg quality of laying hens.
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