Correlation between pregnancy diagnosis by membrane slip and embryonic mortality.

@article{Vaillancourt1979CorrelationBP,
  title={Correlation between pregnancy diagnosis by membrane slip and embryonic mortality.},
  author={Denis Vaillancourt and C J Bierschwal and David Ogwu and Ronnie G Elmore and Catherine E Martin and Anothony J. Sharp and Robert S. Youngquist},
  journal={Journal of the American Veterinary Medical Association},
  year={1979},
  volume={175 5},
  pages={466-8}
}
In a study involving 7,477 pregnant cows (5,426 Holstein-Friesians and 2,051 Guernseys), each pregnancy was diagnosed by rectal palpation, using the membrane slip technique. Each cow was examined twice, first by a veterinary student, then by a clinician. Of the cows diagnosed pregnant, 7,058 (94.4%) calved. The embryonic death rate in cows examined during the first 50 days of gestation was significantly (P less than 0.001) greater than that associated with examinations after 50 days of… CONTINUE READING

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