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Bulletine of UASVM Animal Science and Biotechnologies
Year: 2010  |  Volume: 67  |  Issue: 1  |  Page No.: 326 - 333

Influence of Organic Selenium on Morphological Characters and Survival of Fry and Juvenile Carp (Cyprinus carpio), Lausitz Variety

Aurel SARA, Alina R. ANI, Aurelian BARBU and Mihai BENTEA    

Abstract: The present research concerns the use of organic selenium (Sel-plex) in quantities of 0.03 mg/kg grained fodder, in the nutrition of breeding carp (Cyprinus carpio), Lausitz variety (for short carp) three summers old. Nutrition has been carried out during 47 days before naturally directed reproduction, from which carp fry resulted. The aim of this study is to investigate the effect of organic selenium on morphological traits and survival of carp fry and later carp juvenile carp. The experiment was placed at Martinesti farm (Cluj County) and used two breeding families: an experimental one (2 ♂ 1 ♀) and a witness one (2 ♂ 1 ♀); reproduced naturally in two pools offering the same conditions. After reproduction, hatching and larval morphological characteristics were studied on resulting fry and juveniles. During exogenous feeding fry were fed with powder milk, containing for the experimental group 0.03 mg organic selenium/kg fodder. After this growth stage of 8 days there were no significant morphological differences between the two groups. From this point on a juvenile stage followed, when feeding was carried out using 50% powder milk and 50% corn flour; improved with 0.03 mg organic selenium /kg fodder for the experimental group. At the end of this stage there were significant differences in terms of average body weight: the control group showed an average weight of 0.5996±0.2269 g/specimen and its variability of 37.84% compared to the experimental group which recorded a higher average weight of 0.6212±0.2267 g/specimen and a variability of 36.49%.

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