The Journal of Protozoology Research
Online ISSN : 2434-7027
Print ISSN : 0917-4427
Volume 6, Issue 1
Displaying 1-4 of 4 articles from this issue
  • M. A. TAYLOR, J. CATCHPOLE, R. N. MARSHALL, J. A. GREEN
    1996 Volume 6 Issue 1 Pages 1-12
    Published: 1996
    Released on J-STAGE: April 30, 2021
    JOURNAL OPEN ACCESS
    Groups of broiler and layer chicks were experimentally infected with 400, 20,000 and 1,000,000 oocysts of Cryptosporidium baileyi at either 2, 16 or 30 days of age. Clinical signs were not observed in any of the infected birds and there was no significant effect on weight gain compared to uninfected controls. Tissues examined histologically at 2, 5, 7, 14, 21 days post-infection (DPI) revealed the presence of parasites in the Bursa of Fabricius and cloaca between 7 and 14 DPI, and occasionally in the caeca and trachea. Hypertrophy and hyperplasia of the lining epithelial cells, particularly in the bursa, were the main histological changes observed. A marked heterophil response with acute inflammatory exudate and bursal cast formation was seen in some of the heavily challenged birds.
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  • SHUICHI KUBOTA, TSUTOMU KAKUDA, CHIHIRO SUGIMOTO, DAVID WALTISBUHL ...
    1996 Volume 6 Issue 1 Pages 13-20
    Published: 1996
    Released on J-STAGE: April 30, 2021
    JOURNAL OPEN ACCESS
    Benign bovine Theileria parasite, which is presumed to be of T. sergenti / T. buffeli / T. orientalis group, is distributed in Asia, Europe and Australia. An immunodominant major piroplasm surface protein (MPSP) gene of the parasites was analyzed and most of the parasite stocks and isolates were found to contain more than two different allelic types of MPSP. Parasite populations of a field isolate of benign Theileria species collected from Australian calf was analyzed by using allele-specific polymerase chain reaction (PCR), DNA restriction fragment length polymorphism (RFLP) and DNA sequencing. MPSP types of B1- and C- parasites were detected in the Australian samples. Nucleotide sequence of the gene of Australian C- type MPSP was similar to that of Japanese C- type parasite (T. sergenti) with 98.5% homology at nucleotide level. The study showed that Australian benign Theileria parasites are composed of a combination with at least 2 types of parasite one of which is similar to C- type of T. sergenti.
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  • IVAN PAVLOVIĆ, VOJIN IVETIĆ, MILANKA ERSKI-BILJIĆ, MARIJA MILUTINO ...
    1996 Volume 6 Issue 1 Pages 21-24
    Published: 1996
    Released on J-STAGE: April 30, 2021
    JOURNAL OPEN ACCESS
    The sporozoan parasites Cryptosporidium spp. are recognized as significant pathogens of vertebrates (mammals, birds, reptiles and fishes). Most infections have been associated with acute transient disease, mainly in neonates, like piglets. Most case of the porcine cryptosporidiosis are nonhemorrhagic diarrhea. In our examination cryptosporidia organisms were detected in the microvillus brush of 11.25% (37/329) of pigs from 11-12 weeks old. Organisms were found in the jejunum and ileum. All of cryptosporidia infected pigs had diarrhea but at 32% of these had other primary diarrheagenic agents or lesion capable of causing their diarrhea.
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  • TERUMASA SHIMADA, SOJIN SHIKANO, RIE HASHIGUCHI, FUMIHITO OHASHI, ...
    1996 Volume 6 Issue 1 Pages 25-30
    Published: 1996
    Released on J-STAGE: April 30, 2021
    JOURNAL OPEN ACCESS
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