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Bacterial Study of Streptococcosis in Infected fish and Antibiotic Resistance in Rainbow trout (Oncorhynchus mykiss ) farms in Guilan Province
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Monireh Faeed *   , Babak Ramezani |
| Inland Waters Aquaculture Research Center |
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Abstract: (2503 Views) |
| Streptococcosis is one of the most causes of mortality in rainbow trout farms in Guilan province This study was conducted in 7 cultivated rainbow trout farms in Guilan province in 2013-2014. The aim of this study was to investigate the incidence of streptococcosis and its antibiotic resistance in Guilan province. The infected fish (168 with an average weight of 25-50 g) with clinical signs such as blurry, exophthalmic eyes and bleeding in the eyes, skin, fins fish were sampled . Samples were taken from the liver, kidney, spleen and some parts of the brain and transferred to the Blood Agar and TSA Agar. The disease was observed in all seasons .The incidence of Streptococcosis in this study was 39.29%. The streptococcal bacteria were isolated S. iniae (33.3%), S. agalactia (39.4%) and E. faecalis (27.3% ) respectively and antibiotic resistance of bacteria in rainbow trout showed the highest resistance to Bacitracin and lincomycin. (92% -100%). |
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| Keywords: Streptococcosis, Rainbow trout, bacteria |
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Full-Text [PDF 472 kb]
(3127 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2017/10/23 | Accepted: 2018/01/5 | Published: 2018/09/16
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