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"Experientia docet" - Experience is the best teacher

Diagnosis of pregnancy in dairy cows based on the pregosterone content of milk. Part 1. Discriminating between pregnant and non

  • 1988
  • Issue: 4
  • Volume: 18
W.A. Butterfield, M.C. Lyne & A.W. Lishman Page: 150 - 152

A linear discriminant function (LDF) was used to estimate the level of milk progesterone which allowed the best overall classification of dairy cows into pregnant and non-pregnant groups (confirmed by rectal palpation). Progesterone levels were measured in milk samples drawn…

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Diagnosis of pregnancy in dairy cows based on the progesterone content of milk. Part 2. Effect of day of sampling and number of

  • 1988
  • Issue: 4
  • Volume: 18
W.A. Butterfield & A.W. Lishman Page: 153 - 155

Two of the many factors which may affect the accuracy of pregnancy diagnosis using milk progesterone levels are day of sampling and number of samples taken per cow. These two aspects were analysed using information obtained from progesterone profiles encompassing…

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