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  • Title: Some observations on the response of ring-necked pheasants to inoculation with various strains of cell-culture-propagated type II avian adenovirus.
    Author: Fadly AM, Cowen BS, Nazerian K.
    Journal: Avian Dis; 1988; 32(3):548-52. PubMed ID: 2848487.
    Abstract:
    The response of ring-necked pheasants to inoculation with three strains of cell-culture-propagated type II avian adenovirus was examined. Marble spleen disease (MSD) virus of pheasants and both avirulent and virulent strains of hemorrhagic enteritis virus (HEV) of turkeys all induced typical gross and microscopic splenic lesions of MSD; neither MSD-associated lung lesions nor mortality were noted in inoculated pheasants, regardless of strain of virus used. Pheasants inoculated with a cell-culture-propagated avirulent strain of HEV were properly immunized against challenge with virulent HEV, as indicated by seroconversion and by protection against virus-induced splenic lesions. We conclude that these strains of type II avian adenovirus are comparable in pathogenicity for pheasants and cannot be distinguished. Further, absence of MSD-associated lung lesions and mortality in pheasants maintained under controlled laboratory conditions suggest that other environmental factors are probably involved in induction of such lesions and mortality in field cases of MSD.
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