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Experimental transmission of bovine leukosis virus by simulated rectal palpation. 1988

S G Hopkins, and J F Evermann, and R F DiGiacomo, and S M Parish, and J F Ferrer, and S Smith, and R L Bangert
Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle 98195.

Eight six-month-old Holstein male calves were experimentally inoculated by rectal palpation with whole blood from a donor seropositive to bovine leukosis virus. The inoculation consisted of the deposition of 2 ml of whole blood on a disposable obstetrical sleeve followed by a 30 second rectal palpation to simulate the process of pregnancy detection or artificial insemination. This procedure was repeated at weekly intervals for three consecutive weeks. All eight calves developed antibodies to bovine leukosis virus within five weeks after the initial palpation. The presence of the virus was demonstrated in the peripheral blood leucocytes of all eight calves at nine weeks. These results indicated that routine rectal palpation may be an effective mode of spread of bovine leukosis virus in susceptible cattle.

UI MeSH Term Description Entries
D007315 Insemination, Artificial Artificial introduction of SEMEN or SPERMATOZOA into the VAGINA to facilitate FERTILIZATION. Artificial Insemination,Eutelegenesis,Artificial Inseminations,Eutelegeneses,Inseminations, Artificial
D007938 Leukemia A progressive, malignant disease of the blood-forming organs, characterized by distorted proliferation and development of leukocytes and their precursors in the blood and bone marrow. Leukemias were originally termed acute or chronic based on life expectancy but now are classified according to cellular maturity. Acute leukemias consist of predominately immature cells; chronic leukemias are composed of more mature cells. (From The Merck Manual, 2006) Leucocythaemia,Leucocythemia,Leucocythaemias,Leucocythemias,Leukemias
D008297 Male Males
D010173 Palpation Application of fingers with light pressure to the surface of the body to determine consistence of parts beneath in physical diagnosis; includes palpation for determining the outlines of organs. Palpations
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011258 Pregnancy Tests Tests to determine whether or not an individual is pregnant. Pregnancy Test,Test, Pregnancy,Tests, Pregnancy
D012007 Rectum The distal segment of the LARGE INTESTINE, between the SIGMOID COLON and the ANAL CANAL. Rectums
D001909 Leukemia Virus, Bovine The type species of DELTARETROVIRUS that causes a form of bovine lymphosarcoma (ENZOOTIC BOVINE LEUKOSIS) or persistent lymphocytosis. BLV,Bovine Leukemia Virus,Cattle Leukemia Virus,Leukemia Virus, Cattle,Virus, Bovine Leukemia,Virus, Cattle Leukemia
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D002418 Cattle Diseases Diseases of domestic cattle of the genus Bos. It includes diseases of cows, yaks, and zebus. Bovine Diseases,Bovine Disease,Cattle Disease,Disease, Bovine,Disease, Cattle,Diseases, Bovine,Diseases, Cattle

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