The present study was undertaken to elucidate whether an increased, but physiological, amount of progesterone (P(4)) supplied to the porcine corpus luteum (CL) affects luteal secretion of androgens and estrogens in freely moving gilts. On day 9 of the estrous cycle, the jugular veins as well as both ovarian arteries and both ovarian veins of gilts were cannulated. Progesterone was infused into ...

The effect of time of OvuGel administration on timing of estrus and ovulation and fertility results was evaluated in a study involving 448 gilts that had been synchronized for estrus by administering Matrix for 14 d. A RCBD with the following treatments was used: 1) Control (no OvuGel administration), 2) OvuGel administration on d 5 (118 h) after the end of Matrix administration (OV5), and 3) O...

In order to define the patterns of TSH, T4, T3, rT3, GH and cortisol during the estrous cycle of sheep, pluriparous and primiparous ewes were synchronized with progestagen-impregnated pessaries (Veramix) at the start of the normal breeding season. After the pessaries were removed (day 0), daily blood sampling was carried out in cannulated ewes during the ovulatory cycle. Hormonal analyses of TS...

BACKGROUND The purpose of the present study was to determine how acute adult and/or prior early-in life (EIL; P14-P16) exposure to bladder inflammation affects bladder content of calcitonin gene related peptide (CGRP) and substance P (SP). Estrous cycle influences were also studied in the adult-treatment conditions. METHODS In Experiment 1, intravesical zymosan or isoflurane anesthesia alone ...