Impacts of Cycled Dietary Protein Ratios on the Growth Performance and Somatic Indices of Meagre (Argyrosomus regius)
     
Yazarlar (2)
Prof. Dr. Derya GÜROY Yalova Üniversitesi, Türkiye
Onur Karadal İzmir Katip Çelebi Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (Diğer hakemli uluslarası dergilerde yayınlanan tam makale)
Dergi Adı Aquatic Sciences and Engineering
Dergi ISSN 2602-473X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler TR DİZİN
Makale Dili İngilizce Basım Tarihi 06-2019
Cilt / Sayı / Sayfa 34 / 2 / 61–66 DOI 10.26650/ASE540928
Makale Linki https://cdn.istanbul.edu.tr/file/JTA6CLJ8T5/687552315A89418C86661463657A2EBA
Özet
Protein is both an essential and a costly nutrient in aquafeeds. In this study, the effects of differentcyclic protein ratios on growth performance, biological indices, and profitability of meagre (Argyrosomus regius) were investigated. Diets which included 48, 44, and 40% protein ratios were prepared, and the experimental groups were designed by cyclical periods of 48% for 12 weeks (P48,control), 40% for 6 weeks + 48% for 6 weeks (P40/48), and 44% for 6 weeks + 48% for 6 weeks(P44/48). The study was carried out with three replicates for 12 weeks in nine 450 L fiberglass tanksconnected to a recirculating marine water system. Meagre with an average weight of 49.93±0.35g were kept with 10 fish per tank. At the end of the study, the best weight gain was observed inthe P48 group compared to the other treatments (P<0.05). However, no statistical differenceswere found between the specific growth rates and feed conversion ratios of the experimentalgroups (P>0.05). In addition, both condition factor and viscerosomatic index were higher in P44/48and P40/48, respectively (P<0.05). In conclusion, aquafeeds with a protein content of 48% can becirculated for short periods as part of 40% protein diets.
Anahtar Kelimeler
Argyrosomus regius | Cycled feeding | Fish nutrition | Marine aquaculture | Profitability