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    Beneficial effects of Oral Allspice, Pimenta dioica powder supplementation on the hemato-immunological and serum biochemical responses of Oreochromis mossambicus
    (Wiley, 2016) Gullu, Kenan; Acar, Umit; Kesbic, Osman Sabri; Yilmaz, Sevdan; Agdamar, Sevan; Ergun, Sebahattin; Turker, Ali
    The present study investigated the effects of dietary allspice powder supplementation on welfare status of Tilapia, Oreochromis mossambicus assessed by hemato-immunological and serum biochemical parameters. Five diets were formulated to contain 0 (control), 5, 10, 15 or 20g of allspicekg(-1) of fish feed. Fish were fed experimental diets for 60days. Supplementation of allspice powder at 10gkg(-1) positively influenced the serum glucose, plasma lysozyme activity and myeloperoxidase activity. Dietary allspice powder at 15gkg(-1) also positively influenced the serum biochemical parameters (total protein, albumin and globulin) and plasma lysozyme activity. However, 20gkg(-1) allspice powder group had significantly lower values of respiratory burst activity and red blood cell count than other experimental groups (P<0.05). In conclusion, the results of the present study demonstrated that supplementation of allspice powder at 10 or 15gkg(-1) for 60days, had beneficial effects on improvement of some immunological and serum biochemical status of O. mossambicus. These findings suggest that dietary supplementation of allspice powder might further improve the resistance to fish pathogens.
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    Effects of Replacement Cold Press Poppy Seed (Papaver somniferum) Oil to Fish Oil at Different Proportions on the Growth Performance, Blood Parameters, and Digestive Tracks Histopathology in Juvenile Common Carp (Cyprinus carpio)
    (Wiley, 2023) Kesbic, Osman Sabri; Acar, Umit; Demirci, Beste; Terzi, Funda; Tezel, Rifat; Turker, Ali; Gullu, Kenan
    The major goal of the study is to determine the potential use of poppy seed oil as a main lipid source in common carp diets. To investigate this, five different experimental diets (PO0, PO25, PO50, PO75, and PO100) with various proportions of fish oil and poppy seed oil blended as oil sources were provided and supplied to common carp for 90 days. In triplicate groups of 60 fish, 300 common carp weighing 1.15 +/- 0.06 g were randomly placed in 100 L aquariums. At the end of the feeding trial, blood and tissue samples were collected from the fish after gravimetric measurements of the fish. The growth and feed utilization performance of the fish were calculated by gravimetric measurements, and tissue samples were examined by hematological, micromorphometric, and histopathological methods. According to the results, poppy seed oil enhanced the quantity of linoleic acid (18 : 2 omega-6) in the diet, and fish fed with the diet consisting completely of poppy seed oil (PO100) had the significantly greatest growth and feed utilization performance (P < 0.05). Furthermore, no significant differences in hematological or liver pathology were detected between all groups that were fed with experimental diets (P > 0.05). However, as compared to the control group, the digestive system micromorphometry and histomorphometric measurements of the fish fed with PO100 group diets showed a significant increase (P < 0.05). In conclusion, it was determined that the carp fed with feeds produced by using only poppy oil as the main fat source improved their digestive system, growth, and feed utilization performance without any negative effects.
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    Öğe
    Optimal Dietary Protein Levels in Juvenile Electric Blue Cichlid (Sciaenochromis fryeri)
    (Israeli Journal Of Aquaculture-Bamidgeh, 2008) Gullu, Kenan; Guroy, Derya; Ceiik, Ihsan; Tekinay, Ahmet Adem
    A feeding trial was conducted to determine the dietary protein requirement of juvenile electric blue cichlids (Sciaenochromis fryeri). Groups of fish (0.50 +/- 0.01 g) were fed one of four isocaloric diets containing protein levels ranging 35-50% for 12 weeks. According to the broken-line model, the dietary protein requirement was estimated as 38.8%. The feed conversion ratio ranged from 1.73 in the 50%-protein group to 2.16 in the 35% group. There were statistically significantly differences in feed intake and protein efficiency ratio. In general, the protein efficiency ratio decreased as the dietary protein level increased. For optimum growth, feed conversion, and protein utilization, a diet containing 39-40% protein, 11% crude lipid, and 20.7 MJ gross energy/kg diet is recommended for juvenile S. fryeri.