Abstract
Publisher Summary This chapter discusses a study to investigate the venous-arterial counter current exchange of testosterone, estradiol, and progesterone in sows ovarian vascular pedicle. All experiments were carried out with sows weighing 120–150 kg after the second farrow. Laparatomies were performed under general anesthesia, and ovary with the ovarian pedicle vasculature was isolated and transferred under stereomicroscope. The ovarian artery was connected with the middle uterine artery by a polyethylene cannula, which passed through a peristaltic miniflow pump and a water bath (40°C). The velocity was 7.36 ± 0.43 ml/min and blood pressure in the ovarian artery was about 10–13 kPa. Fallopian tube and infundibulum were ligated and cut off. The results indicate that during and 30 min after testosterone, estradiol, or progesterone infusion into ovarian vein, radioactivity in the blood samples collected from incised branch of ovarian artery was found. After the infusion of radiochromium labeled autologous red blood cells into the ovarian vein, no radioactivity in the blood samples from incised branch of ovarian artery was determined.
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