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Epizootic bovine abortion

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Authors

D. G. Mckercher, Virologist in the Experiment Station
P. C. Kennedy, Veterinarian in the Experiment Station
J. A. Howarth, University of California

Publication Information

California Agriculture 17(6):6-8.

Published June 01, 1963

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Abstract

Epizootic bovine abortion has caused heavy calf losses—as high as 65% in initial pregnancies—in California beef herds since 1954. Affected cows show no signs of illness, but edema, hemorrhage, and liver damage are characteristic findings in the fetus. The cause of the disease is a large virus related to the psittacosis (parrot fever) virus. There are indications that an immunity develops in cattle which abort, but attempts to prevent the disease by vaccination have not been successful thus far. Antibiotic therapy is not a practical control measure. How the virus is maintained is not yet known. If it is proven to be venereally transmitted, artificial insemination may offer the only hope of bringing the disease under control.

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Author notes

These investigations were made possible through funds provided by the Animal Disease and Parasite Research Branch, Agricultural Research Service, United States Department of Agriculture.

Epizootic bovine abortion

D. G. Mckercher, P. C. Kennedy, J. A. Howarth
Webmaster Email: wsuckow@ucanr.edu

Epizootic bovine abortion

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

D. G. Mckercher, Virologist in the Experiment Station
P. C. Kennedy, Veterinarian in the Experiment Station
J. A. Howarth, University of California

Publication Information

California Agriculture 17(6):6-8.

Published June 01, 1963

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Epizootic bovine abortion has caused heavy calf losses—as high as 65% in initial pregnancies—in California beef herds since 1954. Affected cows show no signs of illness, but edema, hemorrhage, and liver damage are characteristic findings in the fetus. The cause of the disease is a large virus related to the psittacosis (parrot fever) virus. There are indications that an immunity develops in cattle which abort, but attempts to prevent the disease by vaccination have not been successful thus far. Antibiotic therapy is not a practical control measure. How the virus is maintained is not yet known. If it is proven to be venereally transmitted, artificial insemination may offer the only hope of bringing the disease under control.

Full text

Full text is available in PDF.

Author notes

These investigations were made possible through funds provided by the Animal Disease and Parasite Research Branch, Agricultural Research Service, United States Department of Agriculture.


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