this study compared the effects of different levels of dietary fat on growth performance, liver enzymes and blood biochemical of juvenile siberian sturgeon (acipenser bearii) was designed for 12 weeks. for this reason 135 fish (15.6 ± 0.33g; mean ± sd) at nine 500 liter fiberglass tanks, each one containing 15 fish. three experimental diets with the same protein (42 %) and 3 fat levels 10, 15 a...

The parasites that normally cause fish disease under farming condition possess a direct life cycle with no need to intermediate hosts for dissemination. The ensuing infection can therefore spread rapidly inducing more damaging lesions in the external parts of host especially the gills. In this study, in order to isolate and identify foreign parasites of phytophagous fish in Guilan province, 4 f...

the objective of this study was to produce fish protein hydrolysate (fph) with the most antioxidant activity, by enzymatic hydrolysis from (carassius carassius). the protein of crucian carp a low value fish was hydrolyzed by alcalase 2.4l and the optimal hydrolysis parameters of strongest antioxidant capacity of peptides were obtained using response surface methodology (rsm) by the central rota...

In this study a total number of 15 moribund gold fish (Carassius auratus) were collected from the fish farms of Hooghly district, West Bengal, India. The bacterial infection in the eyes of the affected fishes was recorded. Isolation and biochemical characterization of the bacterial isolate was done in laboratory. The bacterial isolate (GF1) was found to be positive for catalase, methyl red, nit...

Aeromonas hydrophila was obtained from various sources and identified on the basis of growth on selective media, phenotypic and biochemical characters. The isolates (Ah1-Ah9) were subjected to antibiotic susceptibility and resistance pattern tests. The isolates showing maximum resistance to most of the commercial antibiotic discs used were selected. The selected isolate (Ah7) was further subjec...

iii have been reported only in fish. Another common feature was the absence of all surface protein genes or mobile genetic elements targeted as part of the 3-set genotyping and that are usually found in human or bovine isolates. The second subpopulation consisted of βhaemolytic isolates recovered from fish, frogs and sea mammals, and that exhibited medium to high genetic diversity by PFGE. STs ...

The gene encoding the envelope glycoprotein of a recent Danish isolate of a salmonid rhabdovirus, viral haemorrhagic septicaemia virus (VHSV) has been cloned and sequenced at the cDNA level. When compared with the deduced sequence of a French isolate of VHSV, it was noted that there were 13 amino acid substitutions in the Danish virus. Amino acid homologies with the glycoprotein of a North Amer...