This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Bonnin, M. Articles by Dutourné, B. Search for Related Content PubMed Articles by Bonnin, M. Articles by Dutourné, B.

Oestrogen and progesterone concentrations in peripheral blood in pregnant red foxes (Vulpes vulpes)

Summary. Oestrogen levels were low during most of gestation, but there was a significant increase (P <0·05) in oestradiol concentrations at implantation. Early pregnancy was characterized by high levels of progesterone which decreased significantly (P < 0·001) thereafter, but there was no decline in progesterone or rise in oestrogen levels at parturition. There was no difference in the length of progesterone secretion between pregnant and non-pregnant females.