Rodrigues, P. A. [UNESP]Vicente, W. R.R. [UNESP]Cipolla Neto, J.Oliveira, C. A.2022-04-292022-04-291998-04-01Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, v. 50, n. 2, p. 133-139, 1998.0102-0935http://hdl.handle.net/11449/231710The main objectives of this work were to determine the physiological patterns of progesterone on pregnancy and lactation in ewes, and to verify whether the hormone presents a 24h secretion rhythm. Serum levels of progesterone increased during gestation with an abrupt decrease by two days preterm. The autocorrelation analysis showed that this hormone, had a more evident circadian rhythm on preterm, than during early pregnancy and lactation.133-139porCircadian rhythmEweProgesteronePerfil hormonal da progesterona em ovelhas (Ovis aries) no início da gestação, no pré-parto e início da lactaçãoEvaluation of progesterone hormone profile on ewes at early pregnancy, preterm and early lactationArtigo2-s2.0-0039396596