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    Mix Infections in Rainbow Trout (Oncorhynchus mykiss Walbaum): Lactococcus garvieae and Vibrio anguillarum O1
    (Medwell Online, 2011) Tanrikul, T. Tansel; Gultepe, Necdet
    Vibrio anguillarum and Lactococcus garvieae which causes mixed infections were isolated for the first time from rainbow trout farms in the Southwest of Turkey. The outbreak occurred at 15 degrees C water temperature in June 2009. The diseased fish showed erratic swimming, dark discoloration, bilateral exopthalmia, haemorhages on the fins, operculum, the liver, spleen and lower intestines with mortality ranging from 30-50% in the pools. The identities of the isolates were confirmed as V. anguillarum O1 and L. garvieae by biochemical and serological tests using API 20 Strep, API 20 E and API Strept system test strips and also V. anguillarum (ATTC 43305) used as antigens for agglutination. The epizootic disease was effectively controlled by oral administration of enrofloxacin.
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    Mix infections in rainbow trout (Oncorhynchus mykiss Walbauni): Lactococcus garvieae and Vibrio anguillarum O1
    (2011) Tanrikul, T. Tansel; Gultepe, Necdet
    Vibrio anguillarum and Lactococcus garvieae which causes mixed infections were isolated for the first time from rainbow trout farms in the Southwest of Turkey. The outbreak occurred at 15°C water temperature in June 2009. The diseased fish showed erratic swimming, dark discoloration, bilateral exopthalmia, haemorhages on the fins, operculum, the liver, spleen and lower intestines with mortality ranging from 30-50% in the pools. The identities of the isolates were confirmed as V. anguillarum O1 and L. garvieae by biochemical and serological tests using API 20 Strep, API 20 E and API Strept system test strips and also V. anguillarum (ATTC 43305) used as antigens for agglutination. The epizootic disease was effectively controlled by oral administration of enrofloxacin. © Medwell Journals, 2011.
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    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, Seyit
    A 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.