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Evaluation of nutritional values of selected commercial fish meal sources in turbot ( P setta maxima ) diets
Author(s) -
Sevgili Hüseyin,
Kurtoğlu Adem,
Oikawa Masahiko,
Fedekar Devlet,
Emre Yılmaz,
Takeno Noboru
Publication year - 2015
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.12389
Subject(s) - turbot , biology , anchovy , fish meal , zoology , meal , feed conversion ratio , food science , fishery , fish <actinopterygii> , body weight , endocrinology
This study was conducted to evaluate nutritional values of selected commercial fish meals ( FM ) with two experiments in diets of turbot. In experiment I, five diets based on two P eruvian anchovy meals (one is a flame‐dried FM : Peru‐1 and the other steam‐dried FM : Peru‐2), a D anish FM ( D anish LT ), a domestic anchovy LT meal (Domestic LT ) and an A laskan white FM ( WFM ) as major protein source were formulated to contain 56% protein. The diets were fed to fish with an initial average weight of 119.4 ± 0.1 g for 9 weeks. Growth rate, feed utilization, whole body and visceral compositions, nitrogen, lipid and energy balances did not significantly change in Experiment 1 among the treatments. In Experiment 2, four diets based on three FM s ( D omestic LT , D anish LT and P eru‐1) and their mixture (Mix FM ) were formulated to contain 50% protein and fed to triplicated groups of fish with an average initial weight of 51.4 ± 0.1 g for 6 weeks. Once again, there were no significant differences in growth rate and feed consumption among the treatments. However, fish on Mix FM diet had significantly better FCR and PER than the others. The results of two experiment indicated that D anish LT and D omestic LT were better in terms of phosphorus (P) retention and losses than two P eruvian FM s and WFM , suggesting that although different sources of FM s were comparable in terms of growth and feed utilization, they could lead to substantial differences in environmental impacts.