Özet Bu araştırma ile Sinop ili Akliman Bölgesinde yakalanan, Palaemon adspersus Rathke, 1837'nin... more Özet Bu araştırma ile Sinop ili Akliman Bölgesinde yakalanan, Palaemon adspersus Rathke, 1837'nin üreme biyolojisi, larva gelişimi ile yaşama oranlarının tespiti amaçlanmıştır. Akvaryuma yerleştirilen canlı ağırlığı ortalama 2,019±0,702 g ve total boyu ortalama 6,09±0,57 cm olan 15 adet yumurtalı anaçta embriyonik gelişmenin 3 safhada tamamlandığı gözlenmiştir. Larva çıkışından sonra, 200 adet larvanın yaşama oranı ile büyüme özellikleri incelenmiştir. Artemia salina naupli ile beslenen P. adspersus larvaları 25ºC'de ve ‰18 tuzluluktaki deniz suyunda 20 gün içerisinde postlarva safhasına ulaşmışlardır. Bu safhada, larvaların yaşama oranı ve ortalama total boyu sırası ile %85 ve 6,58±0,62 mm olarak tespit edilmiştir. Yumurta çapı ve verimi, ortalama ağırlık ve total boyları sırasıyla 3,120±1,050 g ve 6,62±0,67 cm olan 26 adet yumurtalı P. adspersus bireyinden hesaplanmıştır. Birey başına yumurta verimi ortalama 2118±152 adet ve yumurta çapı kısa ve uzun eksenleri için sırası ile ortalama 0,59±0,39 mm ve 0,82±0,48 mm olarak hesaplanmıştır. Abstract The aim of this study was to determine reproduction biology, larval development and survival rate of shrimp (Palaemon adspersus Rathke, 1837) collected from Sinop, Akliman area, were investigated. 15 gravid female having an average weight of 2.019±0.702 g and an average total length of 6.09±0.57 cm were stocked into aquarium. It is observed that embryonic development was divided into three categories. After hatching, the survival rate and larval development of 200 larvae were investigated. P. adspersus larvae fed by Artemia salina naupli and kept in 25˚C and 18‰ salinity in sea water reached to postlarval stage in 20 days. In this stage, the survival rate and average total length were 85% and 6.58±0.62 mm, respectively. 26 gravid females of P. adspersus having an average weight of 3.120±1.050 g and an average total length of 6.62±0.67 cm were investigated in terms of total fecundity and egg size. The total fecundity of per female was 2118±152 and the mean egg long and short axis diameter were 0.59±0.39 mm and 0.82±0.48 mm, respectively.
Page 1. Introduction An experimental period of 2-3 months is usually necessary for growth studies... more Page 1. Introduction An experimental period of 2-3 months is usually necessary for growth studies to determine the protein and amino acid requirements of fish. These long-term growth studies for the optimization of the feed ...
... 3.4.6. Postlarva Ergin bireyin özelliklerini göstermeye başlamış, kıskaçlar tam oluşmuş ve la... more ... 3.4.6. Postlarva Ergin bireyin özelliklerini göstermeye başlamış, kıskaçlar tam oluşmuş ve larva yerde yürümektedir. Pleopodlar tam oluşmuştur. Rostrumun üstünde ve altında dişler vardır. ... 14.Blaxter, JHS, Development: Eggs and Larvae. Fish Physiology (Edt. ...
This study was conducted in order to investigate the effects of dietary thyme Thymus vulgaris, ro... more This study was conducted in order to investigate the effects of dietary thyme Thymus vulgaris, rosemary Rosmarinus officinalis,and fenugreek Trigonella foenum graecum as feed additives on total liver fat levels and biometric indices of Sea Bass Dicentrarchus labrax. Four isonitrogenous (48% crude protein) and isocaloric(21 kJ/g) diets were formulated to contain 0% (control), or 1% of thyme, rosemary, or fenugreek. In a 45-d feeding trial, 12 fiberglass tanks (140 L) were each stocked with 17 fish (20.43 ± 0.03 g).Herbal supplemented diets significantly decreased the total liver fat, visceral fat index, viscerosomatic index, hepatosomatic index,and increased the spleen–somatic index and bile–somatic index(P<0.05). In conclusion, the results indicated that a dietary level of1.0% for thyme, rosemary, or fenugreek could improve some of the physiological parameters of Sea Bass. Thus, this work provides anew perspective for the use of medicinal herbs that can be added to fish feed to improve the status of fish organs. Thyme, rosemary, and fenugreek contain a number of different active components, which possibly play an important role in improving these conditions, but the mechanism by which this is achieved needs further and more detailed study.
Abstract Allspice Pimenta dioica as a feed additive was studied for its effects on growth perform... more Abstract Allspice Pimenta dioica as a feed additive was studied for its effects on growth performance and disease resistance in Mozambique Tilapia Oreochromis mossambicus. Five isonitrogenous (36% crude protein) and isocaloric (18.5 kJ/g) diets were formulated to contain 0 (control), 5, 10, 15, or 20 g of allspice/kg of fish feed. In a 50-d feeding trial, 15 plastic tanks (21 L) were stocked with 35 fish fry (0.012 g) each. After the feeding trial, fish were exposed to Streptococcus iniae and mortalities were recorded. The second-order polynomial regression indicated that the dietary allspice level of 10 g/kg provided the best growth performance and feed utilization. The greatest survival after pathogen challenge was also obtained from the diet supplemented with allspice at 10 g/kg. Therefore, allspice acts as a growth promoter to improve feed utilization and weight gain in Mozambique Tilapia fry and acts an antimicrobial agent to enhance disease resistance during first feeding of fry. These results suggest that allspice can be used as an alternative to antibiotics in controlling streptococcal disease in tilapia culture. Received October 19, 2012; accepted January 20, 2014.
1 Department of Aquaculture, Faculty of Fisheries, Ondokuz Mayis University, 57000 Sinop, Turkey ... more 1 Department of Aquaculture, Faculty of Fisheries, Ondokuz Mayis University, 57000 Sinop, Turkey 2 Department of Aquaculture, Faculty of Fisheries, Canakkale Onsekiz Mart University, 17100 Canakkale, Turkey 3Central Fisheries Research Institute, PO Box 129, 6001 Trabzon, ...
Turkish Journal of Fisheries and Aquatic Sciences, 2010
Abstract An experiment was designed to determine the optimum dietary protein level of a freshwate... more Abstract An experiment was designed to determine the optimum dietary protein level of a freshwater ornamental fish, Blue streak hap (Labidochromis caeruleus). Four isocaloric fish meal based diets ranging from 30% to 45% in protein were fed to triplicate groups of Blue ...
The objective of this study is to investigate the effects of dietary protein and lipid levels on ... more 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.
... How to Cite. YIGIT, M., ERDEM, M., KOSHIO, S., ERGÜN, S., TÜRKER, A. and KARAALI, B. (2006), ... more ... How to Cite. YIGIT, M., ERDEM, M., KOSHIO, S., ERGÜN, S., TÜRKER, A. and KARAALI, B. (2006), Substituting fish meal with poultry by-product meal in diets for black Sea turbot Psetta maeotica. Aquaculture Nutrition, 12: 340347. ... Correspondence: Murat Yigit, Department of ...
ABSTRACT A feeding trial was conducted to investigate the effects of the dietary incorporation of... more ABSTRACT A feeding trial was conducted to investigate the effects of the dietary incorporation of autoclaved and raw (non-autoclaved) Ulva meal on juvenile rainbow trout (Oncorhynchus mykiss) growth, nutrient utilization, body composition, diet digestibility and fatty acid composition. An algae-free control diet and four experimental diets with either 5 or 10 % inclusion levels of raw Ulva meal (5 % = RU5; 10 % = RU10) or autoclaved Ulva meal (5 % = AU5; 10 % = AU10) were formulated. Fish were fed three times daily to apparent satiation for 12 weeks. The growth of fish fed RU10 (final weight = 76.7 ± 3.31 g; SGR = 2.8 ± 0.05 %) diet was significantly higher than that in fish fed the AU10 diet (67.5 ± 1.61 g; SGR = 2.6 ± 0.03 %). The feed conversion ratio (FCR) was significantly better in fish fed the RU10 diet (0.9 ± 0.06) compared with control diet (1.0 ± 0.06). Condition factor, viscerosomatic index and dress-out remained unaffected by dietary treatment. The hepatosomatic index (HSI) was significantly lower (P < 0.05) in fish fed the AU10 diet (1.2 ± 0.19) than fish fed the other diets (≥1.6). The level of eicosapentaenoic acid (20:5n-3—EPA) in muscle from fish fed the RU10, AU5 and AU10 diets was significantly higher than in fish fed control diet (P < 0.05). Dietary inclusion of Ulva meals resulted in a significant increase in muscle docosapentaenoic acid (22:5n-3—DPA) levels at the end of the feeding period. The results indicate that the dietary inclusion of raw Ulva meal at levels of up to 10 % can be used without significant negative effects on the growth performance, nutrient utilization, dietary digestibility and muscle fatty acid composition. In fact, the inclusion of dietary raw and autoclaved Ulva meal elevated n-3 fatty acids levels of rainbow trout muscle.
Abstract An experiment was designed to determine the optimum dietary protein level of a freshwate... more Abstract An experiment was designed to determine the optimum dietary protein level of a freshwater ornamental fish, Blue streak hap (Labidochromis caeruleus). Four isocaloric fish meal based diets ranging from 30% to 45% in protein were fed to triplicate groups of Blue ...
Özet Bu araştırma ile Sinop ili Akliman Bölgesinde yakalanan, Palaemon adspersus Rathke, 1837'nin... more Özet Bu araştırma ile Sinop ili Akliman Bölgesinde yakalanan, Palaemon adspersus Rathke, 1837'nin üreme biyolojisi, larva gelişimi ile yaşama oranlarının tespiti amaçlanmıştır. Akvaryuma yerleştirilen canlı ağırlığı ortalama 2,019±0,702 g ve total boyu ortalama 6,09±0,57 cm olan 15 adet yumurtalı anaçta embriyonik gelişmenin 3 safhada tamamlandığı gözlenmiştir. Larva çıkışından sonra, 200 adet larvanın yaşama oranı ile büyüme özellikleri incelenmiştir. Artemia salina naupli ile beslenen P. adspersus larvaları 25ºC'de ve ‰18 tuzluluktaki deniz suyunda 20 gün içerisinde postlarva safhasına ulaşmışlardır. Bu safhada, larvaların yaşama oranı ve ortalama total boyu sırası ile %85 ve 6,58±0,62 mm olarak tespit edilmiştir. Yumurta çapı ve verimi, ortalama ağırlık ve total boyları sırasıyla 3,120±1,050 g ve 6,62±0,67 cm olan 26 adet yumurtalı P. adspersus bireyinden hesaplanmıştır. Birey başına yumurta verimi ortalama 2118±152 adet ve yumurta çapı kısa ve uzun eksenleri için sırası ile ortalama 0,59±0,39 mm ve 0,82±0,48 mm olarak hesaplanmıştır. Abstract The aim of this study was to determine reproduction biology, larval development and survival rate of shrimp (Palaemon adspersus Rathke, 1837) collected from Sinop, Akliman area, were investigated. 15 gravid female having an average weight of 2.019±0.702 g and an average total length of 6.09±0.57 cm were stocked into aquarium. It is observed that embryonic development was divided into three categories. After hatching, the survival rate and larval development of 200 larvae were investigated. P. adspersus larvae fed by Artemia salina naupli and kept in 25˚C and 18‰ salinity in sea water reached to postlarval stage in 20 days. In this stage, the survival rate and average total length were 85% and 6.58±0.62 mm, respectively. 26 gravid females of P. adspersus having an average weight of 3.120±1.050 g and an average total length of 6.62±0.67 cm were investigated in terms of total fecundity and egg size. The total fecundity of per female was 2118±152 and the mean egg long and short axis diameter were 0.59±0.39 mm and 0.82±0.48 mm, respectively.
Page 1. Introduction An experimental period of 2-3 months is usually necessary for growth studies... more Page 1. Introduction An experimental period of 2-3 months is usually necessary for growth studies to determine the protein and amino acid requirements of fish. These long-term growth studies for the optimization of the feed ...
... 3.4.6. Postlarva Ergin bireyin özelliklerini göstermeye başlamış, kıskaçlar tam oluşmuş ve la... more ... 3.4.6. Postlarva Ergin bireyin özelliklerini göstermeye başlamış, kıskaçlar tam oluşmuş ve larva yerde yürümektedir. Pleopodlar tam oluşmuştur. Rostrumun üstünde ve altında dişler vardır. ... 14.Blaxter, JHS, Development: Eggs and Larvae. Fish Physiology (Edt. ...
This study was conducted in order to investigate the effects of dietary thyme Thymus vulgaris, ro... more This study was conducted in order to investigate the effects of dietary thyme Thymus vulgaris, rosemary Rosmarinus officinalis,and fenugreek Trigonella foenum graecum as feed additives on total liver fat levels and biometric indices of Sea Bass Dicentrarchus labrax. Four isonitrogenous (48% crude protein) and isocaloric(21 kJ/g) diets were formulated to contain 0% (control), or 1% of thyme, rosemary, or fenugreek. In a 45-d feeding trial, 12 fiberglass tanks (140 L) were each stocked with 17 fish (20.43 ± 0.03 g).Herbal supplemented diets significantly decreased the total liver fat, visceral fat index, viscerosomatic index, hepatosomatic index,and increased the spleen–somatic index and bile–somatic index(P<0.05). In conclusion, the results indicated that a dietary level of1.0% for thyme, rosemary, or fenugreek could improve some of the physiological parameters of Sea Bass. Thus, this work provides anew perspective for the use of medicinal herbs that can be added to fish feed to improve the status of fish organs. Thyme, rosemary, and fenugreek contain a number of different active components, which possibly play an important role in improving these conditions, but the mechanism by which this is achieved needs further and more detailed study.
Abstract Allspice Pimenta dioica as a feed additive was studied for its effects on growth perform... more Abstract Allspice Pimenta dioica as a feed additive was studied for its effects on growth performance and disease resistance in Mozambique Tilapia Oreochromis mossambicus. Five isonitrogenous (36% crude protein) and isocaloric (18.5 kJ/g) diets were formulated to contain 0 (control), 5, 10, 15, or 20 g of allspice/kg of fish feed. In a 50-d feeding trial, 15 plastic tanks (21 L) were stocked with 35 fish fry (0.012 g) each. After the feeding trial, fish were exposed to Streptococcus iniae and mortalities were recorded. The second-order polynomial regression indicated that the dietary allspice level of 10 g/kg provided the best growth performance and feed utilization. The greatest survival after pathogen challenge was also obtained from the diet supplemented with allspice at 10 g/kg. Therefore, allspice acts as a growth promoter to improve feed utilization and weight gain in Mozambique Tilapia fry and acts an antimicrobial agent to enhance disease resistance during first feeding of fry. These results suggest that allspice can be used as an alternative to antibiotics in controlling streptococcal disease in tilapia culture. Received October 19, 2012; accepted January 20, 2014.
1 Department of Aquaculture, Faculty of Fisheries, Ondokuz Mayis University, 57000 Sinop, Turkey ... more 1 Department of Aquaculture, Faculty of Fisheries, Ondokuz Mayis University, 57000 Sinop, Turkey 2 Department of Aquaculture, Faculty of Fisheries, Canakkale Onsekiz Mart University, 17100 Canakkale, Turkey 3Central Fisheries Research Institute, PO Box 129, 6001 Trabzon, ...
Turkish Journal of Fisheries and Aquatic Sciences, 2010
Abstract An experiment was designed to determine the optimum dietary protein level of a freshwate... more Abstract An experiment was designed to determine the optimum dietary protein level of a freshwater ornamental fish, Blue streak hap (Labidochromis caeruleus). Four isocaloric fish meal based diets ranging from 30% to 45% in protein were fed to triplicate groups of Blue ...
The objective of this study is to investigate the effects of dietary protein and lipid levels on ... more 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.
... How to Cite. YIGIT, M., ERDEM, M., KOSHIO, S., ERGÜN, S., TÜRKER, A. and KARAALI, B. (2006), ... more ... How to Cite. YIGIT, M., ERDEM, M., KOSHIO, S., ERGÜN, S., TÜRKER, A. and KARAALI, B. (2006), Substituting fish meal with poultry by-product meal in diets for black Sea turbot Psetta maeotica. Aquaculture Nutrition, 12: 340347. ... Correspondence: Murat Yigit, Department of ...
ABSTRACT A feeding trial was conducted to investigate the effects of the dietary incorporation of... more ABSTRACT A feeding trial was conducted to investigate the effects of the dietary incorporation of autoclaved and raw (non-autoclaved) Ulva meal on juvenile rainbow trout (Oncorhynchus mykiss) growth, nutrient utilization, body composition, diet digestibility and fatty acid composition. An algae-free control diet and four experimental diets with either 5 or 10 % inclusion levels of raw Ulva meal (5 % = RU5; 10 % = RU10) or autoclaved Ulva meal (5 % = AU5; 10 % = AU10) were formulated. Fish were fed three times daily to apparent satiation for 12 weeks. The growth of fish fed RU10 (final weight = 76.7 ± 3.31 g; SGR = 2.8 ± 0.05 %) diet was significantly higher than that in fish fed the AU10 diet (67.5 ± 1.61 g; SGR = 2.6 ± 0.03 %). The feed conversion ratio (FCR) was significantly better in fish fed the RU10 diet (0.9 ± 0.06) compared with control diet (1.0 ± 0.06). Condition factor, viscerosomatic index and dress-out remained unaffected by dietary treatment. The hepatosomatic index (HSI) was significantly lower (P < 0.05) in fish fed the AU10 diet (1.2 ± 0.19) than fish fed the other diets (≥1.6). The level of eicosapentaenoic acid (20:5n-3—EPA) in muscle from fish fed the RU10, AU5 and AU10 diets was significantly higher than in fish fed control diet (P < 0.05). Dietary inclusion of Ulva meals resulted in a significant increase in muscle docosapentaenoic acid (22:5n-3—DPA) levels at the end of the feeding period. The results indicate that the dietary inclusion of raw Ulva meal at levels of up to 10 % can be used without significant negative effects on the growth performance, nutrient utilization, dietary digestibility and muscle fatty acid composition. In fact, the inclusion of dietary raw and autoclaved Ulva meal elevated n-3 fatty acids levels of rainbow trout muscle.
Abstract An experiment was designed to determine the optimum dietary protein level of a freshwate... more Abstract An experiment was designed to determine the optimum dietary protein level of a freshwater ornamental fish, Blue streak hap (Labidochromis caeruleus). Four isocaloric fish meal based diets ranging from 30% to 45% in protein were fed to triplicate groups of Blue ...
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