To prevent the bacterial disease caused by the bait in cultured Chinese sturgeon ( Acipenser sinensis) in Beijing aquarium, the bacterial distributions and sterilization effects of four kinds of live and frozen baits , Hexagrammos otakii, Acanthogobius ommaturus, Penaeus Vannamei and Malltus villosus, were studied.The results showed that two types of dominant bacteria were discovered with serious pathogenicity , belong to the Aeromonas and Acinetobacter.The species of bacteriain live baits and frozen baits were different.The dominant bacteria in live baits were A.hydrophila and two kinds of Non-Fermentative Gram-negative Bacteria , one was A.baumanii.The dominant bacteria in frozen baits were A.lwoffii, A.hydrophila and A.Verona.The treatment methods of live and frozen baits included disinfection , temporarily raised , fro-zen and ultraviolet sterilization.For Hexagrammos otakii, the sterilization effect was not obvious.After 3days raising in a suitable pool , the flora structure tended to be stable , while the ultraviolet sterilization could reduce the total number of bacteria, but could not kill the dominant bacterial pathogens.For Acanthogobius ommaturus, the species of bacteria changed obviously after 1 d, 4 d, 40 d and 110 d freezing.The dominant bacteria were stable in differentfreezingdays.Also, the ultraviolet sterilization could be stable , but could not kill the dominant bacterial patho-gens.For Penaeus Vannamei and Malltus villosus, the ultraviolet sterilization could reduce the numbers of bacteria and kill part of the dominant bacterial pathogens.
Chinese sturgeonnatural baitsbacteriumsterilization method
NETL
NSTL
维普
万方数据
