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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.00 seconds. 
Preferences of the basic components of food by central European speciens of ants.
 NOSKOVÁ, Lenka
This thesis has two parts: the first brings an overview of the role of various foods and nutrients in ants, the second presents the results of an experiment focused on preference of the basic components of food by central European species of ants. In the experiment we provided ants with six different baits (water, 1% sodium chlorid, olive oil, 20% amino acid glutamine, artificial honey [10% sucrose + 10% amino acid] and 20% sucrose). Total, 187 of 690 traps were visited by ants. There were 26 recorded species of ants. Preference of four most abundant species differed. F. polyctena attended most of the offered baits, while other species preferred the sugar components. In general, ants preferred artificial honey and sucrose, regardless of the season and habitats. Additional field tests with different bait concentration of salt and sucrose showed the same preferences regardless of bait type and no additive effects of the amino acid in the sucrose baits. The results of the experiment show a surprisingly consistent and strong preference of central European species of ants for sugars.
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Food preference of the moose (\kur{Alces alces}) at zoological gardens
 ŠERÁKOVÁ, Veronika
The thesis deals with food preferences of elk (Alces alces) in Czech zoological gardens and contains observation of food preferences in zoo Hluboká nad Vltavou. The results are compared with food offer and preference in the wilds described in literature. The first part of the thesis is aimed at literary review about elk, its characteristic, categorization, distribution and biology. It is focused mainly on the studies dealing with feeding habits and food preferences of elk in the wilds and captivity. The second part describes observation of food preferences of three elks in zoo Hluboká nad Vltavou, provided during 10 feedings. The food quality and composition of feed ration was also evaluated not only in zoo Hluboká nad Vltavou, but also in zoo Praha and zoo Brno (based on information from local zoo keepers). Analysis of variance showed that there are differences in feeding latency between various types of food. Elks preferred dried herbs, carrot and oak bark. On the contrary, elks did not preferred oat flakes and both granules for giraffes and elks. Recommendation for feed ration improving, including also food preferences of the elk were also suggested.
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National Repository of Grey Literature : 12 records found   previous11 - 12  jump to record:
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