florfenicol is a broad-spectrum antibiotic, widely used in veterinary medicine. the aim of this study was to determine florfenicol residues in the muscle and liver of cultured rainbow trout in iran by elisa. the samples were collected from three areas (kiar, ardal, and koohrang), considered as areas with high production of trout in the western part of iran. sampling was completed during the spr...

rinbow trout (oncorhynchus mykiss) is an important fish species in aquaculture. the bacterial disease caused the decline in the production of this fish. lactococcus garvieae is one of the most serious infectious agents that caused disease with economical losses in fish farms. streptococosis have signs similar to lactococcosis. therefore the definite diagnosis is sometimes complicated. in the la...

The 70-kDa family of heat shock proteins plays an important role as molecular chaperones in unstressed and stressed cells. The constitutive member of the 70 family (hsc70) is crucial for the chaperoning function of unstressed cells, whereas the inducible form (hsp70) is important for allowing cells to cope with acute stressor insult, especially those affecting the protein machinery. In fish, th...

the aim of this study was to compare the effects of olive leaf extracts and synthetic antioxidant bht at concentration of 1% at increase the shelf life of rainbow trout fillets in light salted and packed at 4±1 °c that index of peroxide (pv), free fatty acids (ffa), thiobarbituric acid (tba), humidity, ph and sensory evaluation of fillets of rainbow trout kept in the refrigerator at the time of...

in recent years, there has been an increasing interest in using food additives from natural sources to improve taste and also extend the shelf-life of semi-preserved foodstuffs. the aim of this study was to examine the chemical and microbiological changes promoted by a local marinating process in rainbow trout fillets during chilled storage. fish fillets were immersed in marinades and stored at...

in this study, the essential oil (eo) of pistacia atlantica subsp. kurdica was added at the rate of 10 g/kg of daily diet of rainbow trout and its effect on gut microbiota (enterobacteriaceae, lactobacillus spp., total count), growth performance and antioxidant status of rainbow trout fillet was investigated. sixty apparently healthy rainbow trout with an approximate weight of 150 g ±3.5 were r...

the purpose of this study was to evaluate the effects of scrophularia striata water extract on the quality and shelf life of the rainbow trout fillet during superchilled storage. fish samples were treated with 1% and 3% s. striata water extract and then stored at -2°c for 20 days. the samples were analyzed periodically for chemical, microbial and sensory characteristics. results indicated that ...

objectives: the presence of e.coli in fish intended for human consumption may constitute a potential danger, not only in causing disease, but also because of the possible transfer of antibiotic resistance from aquatic bacteria to those infecting humans. the objective of this study was to develop an improved pcr method based on species – specific 16 s rrna gene primers (fes, res) for detection o...

Flow-through toxicity tests were conducted on common freshwater fishes: rainbow trout (Oncorhynchus mykiss), three-spined stickleback (Gasterosteus aculeatus), roach (Rutilus rutilus), perch (Perca fluviatilis) and dace (Leuciscus leuciscus), to estimate their sensitivity to acute toxicity of nickel. The 96-hour median lethal concentration (96-hour LC50) values obtained from the tests ranged fr...