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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
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Βερνάδου, Εμμανουέλα Ε.
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Thesis advisor
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Παυλίδης, Μιχαήλ
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Reviewer
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Μυλωνάς, Μωυσής
Χατζηφώτης, Σταύρος
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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.
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Language |
Greek |
Issue date |
2018-11-23 |
Collection
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School/Department--School of Sciences and Engineering--Department of Biology--Post-graduate theses
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Type of Work--Post-graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/5/5/c/metadata-dlib-1543321808-581236-31335.tkl
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Views |
292 |