Bachelor Thesis Candidate Tanja Wagner (2008)

Because of high stocking densities in aquaculture the susceptibility of diseases in fish is increasing. The use of antibiotics often remains ineffective because of bacterial resistance. Consequently, there is an interest in using prebiotic substances such as β-glucans.
The aim of this bachelor thesis is to review effects of β-glucans on growth, mortality and fitness of European Catfish (Silurus glanis). It is tested whether the addition of β-glucan impacts positively on growth and whether there occurs a significant reduction in mortality.
For this purpose catfish are divided into two groups: group A receive feed with glucan and group B receive only standard feed and serve as control. In order to document the growth the fish is weighed every three to four days, the mortality is documented and the behaviour is observed.

Supervisor:

Prof. Dr. Bela H. Buck (AWI)
Dr. Andreas Wohltmann (Veracus/Biosystemics, Bremerhaven)