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Optimization of Weaning Elvers in a Closed Cycle System: Preliminary‐Results
Author(s) -
Bronzi P.,
Zaffignani P.
Publication year - 1990
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19900750637
Subject(s) - stocking , grading (engineering) , chart , weaning , zoology , cage , production cycle , mathematics , statistics , fishery , biology , ecology , engineering , combinatorics , manufacturing engineering
Replicated tests to study the best combination of environmental conditions were carried out with a total of about 200 kg of glass eels of the Thyrrenian sea. Conditions tested were; stocking density, feed formulation, form of feed, grading frequency, cage and tank dimensions and protection of rearing units. Production and survival rates are reported, as well the size — class distribution at the beginning and at the end of the rearing period and the component chart of percentages of different size classes.