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AN ASSESSMENT OF THE VAGINAL BIOPSY TECHNIQUE OF PREGNANCY DIAGNOSIS IN SOWS
Author(s) -
Williamson P.,
Hennessy D.
Publication year - 1975
Publication title -
australian veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.382
H-Index - 59
eISSN - 1751-0813
pISSN - 0005-0423
DOI - 10.1111/j.1751-0813.1975.tb09413.x
Subject(s) - herd , vaginal cytology , estrous cycle , pregnancy , artificial insemination , insemination , vaginal smear , medicine , gynecology , cytology , obstetrics , biopsy , mating , biology , veterinary medicine , pathology , genetics , ecology
Vaginal biopsies were taken from 450 sows in 2 commercial herds, 20 to 22 days after mating or artificial insemination. On histological examination, 96% of sows which subsequently farrowed were correctly diagnosed as pregnant, whereas only 21% and 50% of non-pregnant sows were identified. In 1 herd, 31 of 33 non-pregnant sows showed a delay in returning to oestrus (less than 42 days). Twenty-four of these sows were incorrectly diagnosed as pregnant on the basis of their vaginal cytology.