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Partial immunological paralysis to Trichomonas foetus antigen in calves

Published online by Cambridge University Press:  15 May 2009

W. R. Kerr
Affiliation:
Ministry of Agriculture, Northern Ireland
Muriel Robertson
Affiliation:
The Lister Institute, S.W. 1
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The intramuscular injection of large amounts, 2–3 g., of Trichomonas foetus crude antigen into five young calves during the first 3 weeks of life produced no antibody.

When the animals were tested with the standard challenge at intervals of several months they responded feebly, showing a definitely impaired capacity to produce antibody, when compared with the response of normal animals.

The ages of the animals still showing this partial paralysis ranged from 1 year and 5 months to 2 years and 2 months.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1956

References

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