Plasma progesterone concentrations in the mid-luteal phase are dependent on luteal size, but independent of luteal blood flow and gene expression in lactating dairy cows.

@article{Lttgenau2011PlasmaPC,
  title={Plasma progesterone concentrations in the mid-luteal phase are dependent on luteal size, but independent of luteal blood flow and gene expression in lactating dairy cows.},
  author={Johannes L{\"u}ttgenau and Susanne E Ulbrich and Nicola Beindorff and Aenne Honnens and Kathrin Herzog and Heinrich Bollwein},
  journal={Animal reproduction science},
  year={2011},
  volume={125 1-4},
  pages={20-9}
}
The objective of the present study was to investigate if plasma progesterone (pP(4)) concentrations are dependent on luteal size, blood flow, or gene expression in luteal tissue. To induce cycles with high and low pP(4) concentrations, respectively, 20 lactating dairy cows received either a single treatment with 25 mg prostaglandin F(2α) (PGF(2α)) on Day 4 Hour 12 (PG1; n=8), or two treatments (25 mg PGF(2α) each) on Day 4 Hours 0 and 12 (PG2; n=12) of the estrous cycle (Day 1, Hour 0=ovulation… CONTINUE READING
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Effects of human chorionic gonadotropin on luteal blood flow and progesterone secretion in cows and in vitro-microdialyzed corpora lutea

  • N. eindorff, A. Honnens, Y. Penno, V. Paul, H. Bollwein
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