[Steroid hormone levels in follicular fluid of swine with spontaneous estrus and ovulation synchronization].
The steroid hormones oestradiol 17 beta, oestrone (E1), testosterone (T), and progesterone (P) were quantitatively determined in follicular fluids in the pre-oestric phase of pigs with spontaneous oestrus and synchronised ovulation. As a whole, mean steroid hormone concentrations exhibited characteristic curves in spite of a relatively wide scatter of individual values. Drastic decline in oestrogen concentration in pigs with spontaneous oestrus and synchronised ovulation was accompanied by rise of P levels, while T values stayed relatively constant. As compared to spontaneous oestrus, treatment for synchronised ovulation caused significantly higher increases in follicular T levels. Positive (P) or negative (E1, T) correlations were found to exist between follicle size and steroid hormone concentration. Conclusions are suggested for further studies.
Blödow
G
G
Forschungszentrum für Tierproduktion Dummerstorf-Rostock, Akademie der Landwirtschaftswissenschaften der DDR.
Bergfeld
J
J
Kitzig
M
M
Brüssow
K P
KP
D000818:Animals; D004971:Estrus / Q000378:metabolism*; D005260:Female; D015571:Follicular Fluid / Q000737:chemistry*; D012739:Gonadal Steroid Hormones / Q000032:analysis*; D010062:Ovulation Induction / Q000662:veterinary*; D013552:Swine / Q000378:metabolism*
D012739:Gonadal Steroid Hormones
Steroidhormonspiegel in Follikelflüssigkeiten von spontanöstrischen und ovulationssynchronisierten Schweinen.