Concentrations of progesterone in the backfat of pigs during the oestrous cycle and after ovariectomy.

  title={Concentrations of progesterone in the backfat of pigs during the oestrous cycle and after ovariectomy.},
  author={F W Hillbrand and Folkmar Elsaesser},
  journal={Journal of reproduction and fertility},
  volume={69 1},
Small samples of backfat were taken daily during one oestrous cycle and more frequently after ovariectomy from 12 gilts by means of a simple biopsy technique and the levels of progesterone were determined. Compared to the levels of progesterone in peripheral plasma changes in backfat levels during the oestrous cycle were delayed by 1-2 days. Maximal levels with 89.7 +/- 9.2 (mean +/- s.e.m) ng progesterone/100 mg backfat were recorded on Day 15 of the oestrous cycle. It was estimated that, on… CONTINUE READING

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