Effects of ingestion of ponderosa pine needles by late-pregnant cows on uterine blood flow and steroid secretion.

@article{Christenson1992EffectsOI,
  title={Effects of ingestion of ponderosa pine needles by late-pregnant cows on uterine blood flow and steroid secretion.},
  author={Lane K. Christenson and Rebecca E Short and Stephen P. Ford},
  journal={Journal of animal science},
  year={1992},
  volume={70 2},
  pages={
          531-7
        }
}
Consumption of Ponderosa pine needles by late-pregnant beef cows results in the premature delivery of a viable calf. We have demonstrated the presence of a factor(s) in plasma from cows fed pine needles that specifically increased uterine arterial tone (i.e., decreased arterial diameter) in vitro. This study was designed to investigate changes in uterine blood flow and steroid secretion/uptake by the gravid uterus of cows fed pine needles to induce premature parturition. Sixteen beef cows were… CONTINUE READING

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