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  • Title: Susceptibility of goats and calves after experimental inoculation or contact exposure to a Canadian strain of Mycoplasma mycoides subsp. mycoides isolated from a goat.
    Author: Rosendal S.
    Journal: Can J Comp Med; 1983 Oct; 47(4):484-90. PubMed ID: 6365296.
    Abstract:
    Transmissibility of Mycoplasma mycoides subsp. mycoides infection from experimentally inoculated goats to other goats and calves was studied. Eight goats and six calves were housed in an 18 m2 room. Six of the goats were inoculated endobronchially with strain D44 isolated from a natural case of polyarthritis in Ontario. These six goats died within a week of Mycoplasma septicemia. The two contact goats or the six calves never showed signs of disease and M. mycoides subsp. mycoides was not recovered from these animals. The contact goats and four calves were killed 25 days after exposure. They were all seronegative, M. mycoides subsp. mycoides was not recovered at necropsy and none had pathomorphological changes attributable to this Mycoplasma. The two remaining calves were inoculated endobronchially with 10(9) CFU of strain D44 and observed for 20 days. They never showed signs of disease and did not have significant lesions at necropsy. Both developed a significant serological response to M. mycoides subsp. mycoides, although this organism was not recovered during the experimental period or at necropsy. This study did not provide evidence for transmission of M. mycoides subsp. mycoides from endobronchially inoculated goats to contact goats or calves and endobronchially inoculated calves did not develop pneumonia. This would suggest that the infection of the goat population in Canada with this pathogen would not be a significant threat to the cattle population.
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