شناسه هاي افزوده :
رمضاني، بابك ، همكار طرح , نجارلشگري، سلطنت ، همكار طرح , احمد نژاد، محدثه ، همكار طرح , زاهدي، آذين ، همكار طرح , قياسي، مريم ، همكار طرح , سپهداري، ابوالفضل ، همكار طرح , بوراني، محمد صياد ، همكار طرح , يوسفي، رحمت ، همكار طرح , قاسمي، محدث ، همكار طرح , جليل ذريه زهرا، محمد ابراهيم ، همكار طرح , صفي خاني، حاجت ، همكار طرح , شريف‌پور، عيسي ، همكار طرح , رضواني، مصطفي ، همكار طرح , راست روان، محمداسماعيل ، همكار طرح , حقيقي، مسعود ، همكار طرح , ذبيحي، منصور ،همكار طرح , كاكولكي، شاپور ،همكار طرح , بهراميان، بهروز ،همكار طرح , فئيد، منيره ،همكار طرح , نظام آبادي، حسن ،همكار طرح
چكيده انگليسي :
A study on health status of Caspian salmon (Salmo trutta caspius) from catch and propagation of broodstocks until releasing of smolts into the sea.
In this project the health condition of Caspian salmon (Salmo trutta caspius), have been investigated in Mazandaran and Guilan provinces since 2010. According to the standard methods and manuals, provincial fish health technicians collected samples from broodstock to detect bacteria, fungi, viruses and parasites and to determine farm-level disease events.
The samples were punctuated which showed changes in behavior, suffering from a disease, parasite, or other physical affliction that were abnormal distribution in pond, such as riding the surface, gathering at the pond sides or in slack water, and crowding the head or tail screens, flashing, scraping on bottom or projecting objects, darting, whirling, or twisting, and loss of equilibrium, and loss of vitality, weakness, and loss of ability to stand handling during grading, seining, loading, or transportation.They were controlled for gross external symptoms such as discolored areas on the body, eroded areas or sores on the surface of the body, head, and fins, swelling on the body or gills, pop eye, hemorrhages and cysts containing parasites and also were examined gross internal symptoms like color changes of organs or tissue (Pale liver or kidney or congested organs), hemorrhages in organs or other tissues, swollen or boil-like lesions, change in texture of organs or tissues accumulated fluid in body cavities, and cysts containing parasites Survey on quality and quantity assessments of rearing water and fungal flora in eggs, yolk sac larvae and exogenous feeding larvae carried out. In the eggs and rearing water fungi such as Penicilium, Mucor and Acremonium showed the most abundance, respectively. Also, in yolk sac larvae and rearing water Mucor and Penicilium were the most abundant. Moreover, in exogenous feeding larvae and rearing water the most abundant larvae were Penicilium. Saprolegnia sp. separated from eggs, larvae and rearing water in all of the mentioned stages.A few bacteria including Entrobacteriaceae, Aeromonas spp, Pseudomonas spp, Bacillus spp, determined in spawners. In order to determine viruses in Caspian salmon spawners, PCR identification kit and various cell lines applied. No viral infections in Caspian salmon spawners have been found yet. Different Caspian salmon abnormalities observed in hatcheries, which include lethargy, emaciation, scoliosis, head deformation.
