Browsing by Author "Yiğit M."

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A comparative evaluation of hematological and biochemical parameters between the italian mullet mugil cephalus (Linnaeus 1758) and the turkish mullet chelon auratus (risso 1810)
(2020-01-01) Fazio F.; Saoca C.; Acar Ü.; Tezel R.; Çelik M.; Yilmaz S.; Kesbiç O.; Yalgin F.; Yiğit M.
This study aimed to carry out a comparative evaluation of the hematological profile (erythrocyte count, hemoglobin concentration, hematocrit, and Wintrobe index parameters such as mean corpuscular volume, mean corpuscular hemoglobin, and mean corpuscular hemoglobin concentration), in addition to certain biochemical parameters (aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, lactate dehydrogenase, serum total protein, albumin, glucose, total cholesterol, and triglycerides), in the Italian mullet Mugil cephalus (Linnaeus 1758) and the Turkish mullet Chelon auratus (Risso 1810). Accordingly, two groups of fish were used in this study: 30 flathead grey mullets, M. cephalus, caught in Lake Faro, Italy, and 30 golden grey mullets, C. auratus, caught in the estuarine channel system of Köyceğiz–Dalyan, Turkey. Statistical evaluations (unpaired t-test) revealed that there were no significant differences in weight or total length values between the two mullet groups. However, the differences between all the evaluated blood parameters (except alanine aminotransferase) between the Italian and the Turkish mullet were significant (P < 0.0001). The present study demonstrated that there were significant hematological and biochemical differences between the Italian (M. cephalus) and the Turkish (C. auratus) mullet. Our findings also contribute to expanding the knowledge on the hematology and biochemistry of two different species of mullet originating from two different habitats. Since the evaluation of blood parameters represents an essential tool in examining the effects of environmental conditions on fish physiology and, consequently, on fish health status, further research in this field is encouraged and would be very useful.
Effects of Tank Color on Growth Performance and Nitrogen Excretion of European Seabass (Dicentrarchus labrax) Juveniles
(2016-03-01) Kesbiç O.; Yiğit M.; Acar Ü.
The present study investigated feed efficiency and growth performance of juvenile Seabass (Dicentrarchus labrax) cultured in tanks with different colors. Triplicate groups of experimental fish were distributed into 12 tanks, which showed four different tank colors, i.e. red, blue, green, and yellow. All the fish in the trial received the same diet for a period of 60 days. Forty fish with an average weight of 44 g were stocked in the tank. All experimental tanks were supplied with seawater of 22 ppt salinity with temperature ranging between 17–20 °C during the course of the experiment. Tank water volume in the experimental facility of the recirculating aquaculture system (RAS) was set to 40 L. The RAS system consisted of bio-filtration, UV filtration and gravel-mechanic filtration units. Results in the present study demonstrated that growth performance and feed utilization were affected by the tank colors tested in the trial. It is concluded that the selection of appropriate tank color might affect economic benefits in aquaculture facilities.
Evaluation of dietary protein and lipid requirements of two-banded seabream (Diplodus vulgaris) cultured in a recirculating aquaculture system
(2014-01-01) Bulut M.; Yiğit M.; Ergün S.; Kesbiç O.; Acar U.; Gültepe N.; Karga M.; Yılmaz S.; Güroy D.
The objective of this study is to investigate the effects of dietary protein and lipid levels on the growth performance and bioeconomic benefits of two-banded seabream (Diplodus vulgaris) juveniles, a candidate species for aquaculture sector. Eight experimental diets were formulated with four protein (50, 45, 40 and 35 %) levels for each of the two lipid levels (15 and 10 %). Triplicate groups of juvenile fish with an average initial body weight of ~3.64 g were reared in a recirculating aquaculture system and hand fed twice a day until satiation for a period of 60 days. In the experiment, no difference in survival rate was found between the different groups. Relative growth rate (RGR), specific growth rate (SGR), feed conversion ratio (FCR) and daily feed intake were not significantly affected by increasing protein and/or lipid treatments in this present study. However, the RGR, SGR and FCR values showed slightly better efficiency in the experimental group (35/15) fed with lower protein content (35 %) and higher lipid level (15 %) compared with those fed other diets. According to bioeconomic analyses results, the diet with the 35 % protein and 15 % lipid generated the best profit. The results suggest that two-banded seabream can be accepted as a promising alternative species for the aquaculture industry and optimum growth of two-banded seabream fingerlings can be obtained when they are fed a diet containing 35 % crude protein and 15 % crude lipid. © 2013 Springer Science+Business Media Dordrecht.