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Öğe Effect of Trachelobdella lubrica (Hirudinea: Piscicolidae) on biochemical and haematological characteristics of black scorpion fish (Scorpaena porcus, Linnaeus 1758)(Springer, 2006) Celik, Ekrem Sanver; Aydin, SeyitBlack Scorpion fish (Scorpaena porcus Linnaeus 1758) caught during monthly sampling carried out in 2003 in the Dardanelles, Turkey, were examined for the parasite. Trachelobdella lubrica. Infested fish were caught only during December 2003, and the clinical conditions of the 12 fish naturally infested with T. lubrica included fin rot, swollen foci of skin and haemorrhages of the gill and abdominal skin. The prevalence, intensity and abundance of infestation in December 2003 were 40%, 1.75 and 0.70, respectively. The average hepatosomatic index of the infested fish was lower than that of noninfested fish, while the means of the kidney index, splenosomatic index, condition factor, body weight and length were not significantly different between the infested and noninfested fish groups. Blood analysis was conducted on 12 naturally infested and 12 healthy (noninfested) Black Scorpion fish to determine the possible characteristic changes in blood parameters of the fish in response to natural infestation with T. lubrica. Blood leucocyte counts, haematocrit levels, serum total protein, albumin phosphorus, urea, glucose, globulin, cholesterol and triglyceride concentrations in naturally infested Black Scorpion fish were significantly less than those of the noninfested fish (p < 0.05). No significant decreases were observed in the serum sodium, iron, calcium, potassium, chlorine, blood urea nitrogen and creatinine values of the naturally infested fish. Blood haemoglobin values, erythrocyte counts and serum glutamate aspartate aminotransferase (glutamate oxalacetate transaminase), alanine aminotransferase (glutamate pyruvate transaminase), uric acid and very low-density lipids levels of infested fish were insignificantly greater than those in healthy fish.Öğe Effects of herbs and spice on health status of tilapia (Oreochromis mossambicus) challenged with Streptococcus iniae(Veterinarni A Farmaceuticka Univerzita Brno, 2014) Gultepe, Nejdet; Bilen, Soner; Yılmaz, Sevdan; Guroy, Derya; Aydin, SeyitEffects of different herbal extracts on the growth and immune defense of fish were researched in the last decade. The aim of this study was to determine the dietary effects of thyme (Thymus vulgaris), rosemary (Rosmarinus officinalis) and fenugreek (Trigonella foenum graecum) as a feed additive on haematology, innate immune response, and disease resistance of tilapia (Oreochromis mossambicus). In total 228 healthy fish tilapia were divided into four groups (57 fish in one group) and fed diets supplemented with thyme, rosemary and fenugreek at levels of 1%, respectively; fish in the control group were fed diet without any spices. Fish were fed ad libitum three times a day for 45 days. All fish of the experimental groups significantly (P < 0.05) enhanced phagocytic activity, haematocrit, white blood cell, red blood cell, neutrophil and monocyte counts in blood. Significant (P < 0.05) increase of plasma myeloperoxidase and lysozyme activity was found in fish receiving a feed supplemented with fenugreek after 30 days. Respiratory burst activity was non-significantly (P > 0.05) changed during the whole experiment. After 45 days of feeding, fish were injected intraperitoneally with 100 mu l of Streptococcus iniae (8 x 10 colony forming unit). The cumulative mortality was 22%, 27% and 31% in fish receiving diets supplemented with 1% thyme, rosemary and fenugreek, respectively, compared to 61% mortality in the control group. The results indicate that all three supplements used improved the haematological status, non-specific immune response and disease resistance of tilapia against S. iniae; this is the first similar study.Öğe GROSS PATHOLOGY, BLOOD CHEMISTRY, LIPID AND PEROXIDE CONTENTS IN RAINBOW TROUT (ONCORHYNCHUS MYKISS WALBAUM) AFFECTED BY EXPERIMENTAL ARCOBACTER CRYAEROPHILUS INFECTION AT LOW WATER TEMPERATURE(Akademiai Kiado Zrt, 2009) Aydin, Seyit; Gure, Hayati; Cakici, Hasan; Colakoglu, Serhat; Bircan, RecepArcobacter cryaerophilus was isolated from naturally infected rainbow trout (Oncorhynchus mykiss Walbaum), and its pathogenicity was tested by intramuscular injection using healthy 1-year-old rainbow trout under cold-water conditions (at 5 degrees C). The lethal dosage of 50% end point (LD50) for A. cryaerophilus was calculated as 7.79 x 10(5) viable cells. Experimental infection caused gross clinical abnormalities such as fallen scales, exophthalmia, oedema in injection region and at the base of fins, pale gills, kidney necrosis, hyperaemic areas in pale liver, haemorrhagic spots in heart, elongated spleen and swollen gallbladder. Activities of aspartate aminotransferase and alkaline phosphatase, and concentrations of glucose, total protein, albumin, cholesterol, triglyceride and calcium in the serum of the experimentally infected rainbow trout were significantly decreased compared with the healthy fish. Positive correlations were observed among blood parameters. Total lipid weights increased in the brain, muscle and liver tissues of infected fish and dropped in the gill and spleen tissues. Lipid peroxide contents in the brain, liver, kidney, spleen, muscle and gill tissues of infected rainbow trout were significantly higher than in healthy animals. The present work shows that A. cryaerophilus can be moderately virulent for rainbow trout at low water temperature, and changes in lipid and lipid peroxide contents of tissues and blood indices can highlight barely detectable effects of A. cryaerophilus infection in rainbow trout under laboratory conditions. However, the application of these indices in farm biomonitoring using rainbow trout will need more detailed studies and a careful consideration of the environmental parameters.Öğe Investigations of Serratia liquefaciens Infection in Rainbow Trout (Oncorhynchus mykiss Walbaum)(2001) Aydin, Seyit; Erman, Zekai; Bilgin, Ömer CevdetThis study was conducted to investigate Serratia liquefaciens infection in juvenile cultured rainbow trout (Oncorhynchus mykiss Walbaum) during June and July in 1996 about 20 days after flooding in three farms in Erzurum. Bacterial isolates were identified from each farm and tested to determine sensitivity against 18 chemotherapeutants. In addition to minimum bactericidal concentrations (MBC) of chloramine-T and potassium permanganate (KMnO4) were exposures of 17.07-20 mg/l for 1 h and 23.27 mg/l for 10 min. Infections caused fallen scales, bloody and swollen kidney, hyperaemic and pale regions in the liver, haemorrhagic spots in the gills and bloody exudate in the intestine. Histopathological examination demonstrated pathological changes in the liver, spleen and kidney. Naturally infected fish were examined for chemical parameters of blood and compared with healthy fish. Amylase and glutamate oxalacetate transaminase (GOT) enzymes, triglyceride (TG), cholesterol (CHOL), albumin (ALB), albumin/globulin (A/G), iron (Fe) levels, total iron binding capacity (TIBC), unsaturated iron binding capacity (UIBC) and saturation (ST) in the blood serum of infected fish were significantly increased. Glutamate pyruvate transaminase (GPT) and L-lactate dehydrogenase (LDH) enzymes, bilirubin (BIL), glucose (GLC), creatinine (CRE) and total protein (TP) values were not significantly different between the naturally infected fish and the healthy fish. In the therapeutic applications, oral applications of potentiated sulphonamide after disinfections with chloramine-T controlled the infections.Öğe Preliminary Assessment of Dietary Mannanoligosaccharides on Growth Performance and Health Status of Gilthead Seabream Sparus auratus(Taylor & Francis Inc, 2012) Gultepe, Nejdet; Hisar, Olcay; Salnur, Semih; Hossu, Belgin; Tanrikul, T. Tansel; Aydin, SeyitA feeding trial was performed to assess the potential beneficial effect of two levels of mannanoligosaccarides (MOS) on the growth performance, feed utilization, hematological parameters, and liver histopathology of gilthead seabream Sparus auratus (also known as gilthead bream). Mannanoligosaccarides were added at the rates of 2 and 4 g/kg to a fish-meal-based control diet, and each diet was given (twice daily [midmorning and midafternoon] to apparent satiation) to triplicate groups of gilthead seabream growers (mean weight = approximately 170 g) in sea cages. The trial lasted 12 weeks, and the average ambient water temperature ranged from 19.6 degrees C to 24.7 degrees C during the experimental period. At the end of the experiment, fish attained market size (350-450 g) and their health status was evaluated by blood analysis and liver histology. There were no differences in survival rates among fish fed experimental diets. However, there were significant improvements in both growth and feed utilization among fish fed diets supplemented with MOS. Hemoglobin (Hb) and hematocrit (Ht) levels and erythrocyte, leukocyte, and thrombocyte (Thr) counts were unaffected by any dietary MOS. The levels of Hb (g/dL; mean +/- SD) and Ht (%; mean +/- SD) were 11.0 +/- 2.5 and 45.6 +/- 6.7 for the control group, 11.1 +/- 1.7 and 39.3 +/- 8.0 for the 2-g/kg group, and 11.2 +/- 1.9 and 40.2 +/- 8.4 for the 4-g/kg group. The mean Thr count ranged from 47.6 to 53.8 x 10(3)/mm(3). Despite the apparently higher Thr counts for fish fed diets supplemented with MOS, these differences were not significant. Moreover, no histopathological differences were observed in liver tissue cross sections between control and treatment groups. These results suggest that supplementation of diets with MOS had no significant effects on general fish health.Öğe Pseudomonas elongata Infection in Scattered Mirror Carp (Cyprinus carpio): Bacteriology, Gross Pathology and Treatment(Medwell Online, 2009) Gultepe, Nejdet; Aydin, SeyitPseudomonas elongata was isolated from naturally infected scattered mirror carp (Cyprinus carpio) and its pathogenicity was tested by intramuscular injection. The infection caused mortality in scattered mirror carp with gross clinical abnormalities such as dark coloured of a location on body surface, cataract in eyes, haemorrhagic damage of liver, irrigation in kidney, anemia, swollen intestine, fins rot and hyperaemia in operculum and skin. Lethal Doses(50) (LD(50)) of Pseudomonas elongata was calculated 2.24 x 10(5). No significant difference was obtained among enumered of pathogenic bacteria isolated from gill, liver, kidney tissues and total pathogenic bacteria. Sensitivities of Pseudomonas elongata against 50 chemotherapeutants were tested. Minimum inhibitory concentrations of enrofloxacin and chloramine T to the isolate were calculated 5 mL L(-1) and 10 mg L(-1), respectively. Best treatment method was no mortality performed with orally enrofloxacin application and chloramine T bath.Öğe Pseudomonas elongata infection in scattered mirror carp (Cyprinus carpio): Bacteriology, gross pathology and treatment(2009) Gültepe, Nejdet; Aydin, SeyitPseudomonas elongata was isolated from naturally infected scattered mirror carp (Cyprinus carpio) and its pathogenicity was tested by intramuscular injection. The infection caused mortality in scattered mirror carp with gross clinical abnormalities such as dark coloured of a location on body surface, cataract in eyes, haemorrhagic damage of liver, irrigation in kidney, anemia, swollen intestine, fins rot and hyperaemia in operculum and skin. Lethal Dose50 (LD50) of Pseudomonas elongata was calculated 2.24×105. No significant difference was obtained among enumered of pathogenic bacteria isolated from gill, liver, kidney tissues and total pathogenic bacteria. Sensitivities of Pseudomonas elongata against 50 chemotherapeutants were tested. Minimum inhibitory concentrations of enrofloxacin and chloramme T to the isolate were calculated 5 mL L-1 and 10 mg L-1, respectively. Best treatment method was no mortality performed with orally enrofloxacin application and chloramme T bath. © Medwell Journals, 2009.
