Efficacy of a Live‐attenuated Edwardsiella ictaluri Oral Vaccine in Channel and Hybrid Catfish
نویسندگان
چکیده
منابع مشابه
Development of a novobiocin-resistant Edwardsiella ictaluri as a novel vaccine in channel catfish (Ictalurus punctatus).
The efficacy of a novel attenuated Edwardsiella ictaluri vaccine (B-50348) was determined in channel catfish (Ictalurus punctatus) by bath immersion and intraperitoneal (IP) injection. The vaccine was developed from a virulent strain of E. ictaluri (AL93-58) through selection for novobiocin resistance. When channel catfish (average weight 10 g) were IP injected with 4.2 × 10⁶ colony-forming uni...
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There is limited information on whether parasites act as vectors to transmit bacteria in fish. In this trial, we used Ichthyophthirius multifiliis and fluorescent Edwardsiella ictaluri as a model to study the interaction between parasite, bacterium, and fish. The percentage (23-39%) of theronts fluorescing after exposure to E. ictaluri was significantly higher than control theronts (~ 6%) using...
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Edwardsiella ictaluri (E. ictaluri), a Gram-negative, intracellular, facultative bacterium, is the causative agent of enteric septicemia of catfish (ESC), which is one of the most significant diseases of farmed channel catfish. Macrophages have a critical role in major defense mechanisms against bacterial infections by migrating to the site of infection, engulfing and killing pathogens, and pri...
متن کاملEffects of GH on immune and endocrine responses of channel catfish challenged with Edwardsiella ictaluri.
The effects of GH on immune and endocrine responses to channel catfish challenged with the bacterium Edwardsiella ictaluri were examined. Catfish (11.7+/-1.0 g) treated with recombinant bovine growth hormone (rbGH) and challenged with E. ictaluri experienced similar mortality as control-exposed fish. Plasma activity of lysozyme was higher (P<0.01) in rbGH-exposed fish. Compared to day 0 control...
متن کاملPathogen Levels, Lysozyme, and Cortisol Response in Channel Catfish with Susceptibility Differences to Edwardsiella ictaluri
—Differences in bacterial loads, clearance rates, nonspecific immune response, and cortisol response were measured for three family groups of channel catfish Ictalurus punctatus susceptible to enteric septicemia of catfish (ESC) and three ESC-resistant families. Resistant families had lower mortality during challenge (P , 0.0001). Bacterial loads on day 5 postexposure were higher (P , 0.01) in ...
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ژورنال
عنوان ژورنال: Journal of the World Aquaculture Society
سال: 2018
ISSN: 0893-8849,1749-7345
DOI: 10.1111/jwas.12515