Evaluation of the good quality and parasitic purity of fish from lake Ladoga

Freshwater fish is one of the most valuable resources inland waters. Raw a perishable product, therefore, assessment product freshness important indicator its safety. In addition, in relation to freshwater fish, parasitic purity particular importance, since an intermediate host pathogens diseases transmitted humans.The studies were carried out summerautumn period. The objects research samples chilled freshly caught from southern part Lake Ladoga. Veterinary and sanitary examination was accordance with Rules for appointment conduct veterinary aquatic invertebrates products them intended processing sale by organoleptic, physicochemical microscopic methods. Parasitological included external examination, parasitological dissection muscle tissue method parallel cuts compressor. As result, studied recognized as fresh terms parameters. An eyes revealed damage lens eye metacercariae trematodes Diplostomum sp., gill filaments roach affected monogenetic flukes Dactylogyrus sp. Pigmented areas localization Posthodiplostomum cuticola metacercariae, so-called «black-spotted disease», noted on surface body cyprinid family.During autopsy abdominal cavity, internal organs bream, larva Ligula intestinalis found, plerocercoids Diphyllobothrium latum found caviar two individuals pike. result compressor study pike, crucian carp, roach, rudd, perch, Paracoenogonimus ovatus identified. Of parasites D. epidemiological significance, rest are not dangerous humans, should be given basis presentation product.