The Study of Investigating Catching Rate of Esterpotokosis Disease on Breeding Farms of Rainbow Trout (Onchorhynchus mykiss) Arjan Sector of Shiraz City
Sadeghi Limanjoob Reza1*,Farzam Mohsen2 ,Jamali Houshang3 , Syahmard Nahid4, kargar Jahromi Hossein5 and Farzam Mohammad21Department of Aquatic Animal Health, Veterinary School, Kazerun Branch, Islamic Azad University, Kazerun, Iran.
2Department of Physiology, Veterinary School, Kazerun Branch, Islamic Azad University, Kazerun, Iran.
3Department of Microbiology, Jahrom Branch, Islamic Azad University, Jahrom, Iran.
4Department of Physiology, Medical School, Kazerun Branch, Islamic Azad University, Kazerun, Iran.
5Zoonoses research center, Jahrom University of Medical Sciences, Jahrom, Iran.
Abstract: Due to increasing human needs, especially food sources of protein and with regard to the very top of the food value of fish as a good protein source, we see today spread over the loss of water aquaculture industry, especially culturing fish. Intensive fish culture techniques in order to save space and costs, has caused so many kinds of natural pathogens, the pathogens are raised as fish diseases, losses or reduce the efficiency or create losses in the fish impose the occasional aquaculture industry on the world. According to the above aim of the present is studying esterpotokosis disease of rainbow trout breeding farms. A total of 100 samples of alive fish that has symptoms similar to the esterpotokosis disease on Arjan plain in Fars Province Were caught and after necropsy tissue, kidney, liver and brain samples of bacteria on blood agar medium (BA) was performed. Sampling was conducted in the vicinity of the flame and sterile equipment. Samples to the laboratory of Veterinary Medicine, University of Kazarun was moved into the incubator temperature was maintained at 25 ° C for 72 hours. After this period, first by performing Gram staining, catalase test, Gram-negative samples was removed and additional biochemical tests after re-cultures of samples were performed on them. The results showed that the isolates samples were of the two species S.iniae and L.garviae. The amount of fish with clinical signs of infection was S.iniae and 75% L.garviae 20% and 5% of cases were identified. Isolation level S.iniae bacteria of Kidney tissue, Brain, and Liver respectively were 77%, 62% 71% and L. Garviae of Kidney tissue, Brain, liver, were respectively, 10%, 20%, 13%. According to previous research results show that the disease is chronic and there are in Fars province farms and must do something fundamental and surveying to eradicate the disease from the farm.
Keywords: Esterpotokosis disease; Trout; Rainbow; Shiraz Back to TOC