共查询到20条相似文献,搜索用时 15 毫秒
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Immunization against Marek's disease 总被引:3,自引:0,他引:3
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Forty-three cats (experiments 1 and 2) were vaccinated (2 doses, 27 and 30 days between doses) with the F-9 strain of feline calicivirus by the intramuscular route. There was no untoward response in any of the cats to the administration of the vaccinal virus nor was there spread of the virus from 20 vaccinated cats to nonvaccinated cats held in contact during the next 6 months (experiment 2). The vaccinated cats developed serum-neutralizing antibodies that were increased further after the 2nd vaccination. The level of serum-neutralizing antibodies was related to the quantity of vaccinal virus administered. Twenty-three cats vaccinated with the F-9 strain were protected to a significant degree when challenge exposed to virulent calicivirus strain FPV-255 (experiment 1). 相似文献
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K Ziegler 《Veterinární medicína》1982,27(11):651-656
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Evaluation of hyperimmune sera against goat pox viral antigens 总被引:1,自引:0,他引:1
Tropical Animal Health and Production - 相似文献
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Immunization of swine against Trichinella spiralis 总被引:3,自引:0,他引:3
Swine were immunized with partially purified stichosome antigens derived from Trichinella spiralis muscle larvae. In 3 trials, 500 to 600 micrograms of the solubilized particle component (S3) induced moderate levels of resistance to challenge inoculation; the percent reduction in larvae per gram of muscle ranged from 43 to 55. The effect of immunization with S3 on pig intestinal expulsion of adult worms was determined in one experiment and the results indicated that S3 immunization was only weakly effective in enhancing gut expulsion. These results suggest that immunization with S3 induces a protective immune response in the pig that may be directed either against the migrating newborn larvae or against adult worm fecundity. 相似文献