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Identifier 000419599
Title Επίδραση της διατροφής και της διαχείρισης γεννητόρων μαγιάτικου (Seriola dumerili) στην ποιότητα και σύσταση των αυγών κατά τη διάρκεια της αναπαραγωγικής περιόδου
Alternative Title Effect of broodstock diet and management on egg quality and composition during the reproduction season in greater amberjack (Seriola dumerili)
Author Βερνάδου, Εμμανουέλα Ε.
Thesis advisor Παυλίδης, Μιχαήλ
Reviewer Μυλωνάς, Μωυσής
Χατζηφώτης, Σταύρος
Abstract Greater Amberjack (Seriola dumerili) is one fish with very good quality meat and high commercial value, but it has not been produced by the industry of aquaculture. One of the bottleneck for the industrial rearing is its unsuccessful and unreliable reproduction, and one of the most important restrictive factors is the egg quality. The aim of the present study was the comparison of the quality and composition of the greater amberjack eggs, during the whole reproduction period, between two fish farms, the one of Argosaronikos and the other of Galaxidi, with experiments on spawning induction. The egg quality was evaluated from the fecundity, fertilization, embryos and larvae survival and the egg hatching. The nutritional composition of eggs was determinated from the lipid, protein, energy and ash composition. The results indicated that there were no differences between the three weeks of the eggs collection in any of their quality assessment parameters. Comparing the different diet of broodstock, statistical significant differences were found only in eggs composition. Specifically, there were higher percentages of lipids and proteins in eggs derived from broodstock fed with industrialized food (farm of Argosaronikos), while the ash percentage was higher when the broodstock were fed with row fish (farm of Galaxidi). In conclusion, industrialized food seems to positively affect the composition of the eggs, in contrast with the time of egg laying which has no effect. However, further investigation into the effect of egg laying time and broodstock diet on egg quality is required to produce documented conclusions.
Language Greek
Issue date 2018-11-23
Collection   School/Department--School of Sciences and Engineering--Department of Biology--Post-graduate theses
  Type of Work--Post-graduate theses
Permanent Link https://elocus.lib.uoc.gr//dlib/5/5/c/metadata-dlib-1543321808-581236-31335.tkl Bookmark and Share
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