01939naa a2200349 a 450000100080000000500110000800800410001902400540006010000160011424501470013026000090027752009570028665000140124365000140125765000170127165000150128865000140130365000170131765000100133465000110134465000150135565000100137065000170138065300300139765300170142765300290144465300100147370000170148370000170150070000170151777300550153415228422023-05-23       1976    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1016/0093-691X(76)90116-32DOI1 aCALL, J. W.  aPostpartum uterine and ovarian changes and estrous behaviour from lactation effects in normal and hormone treated ewes.h[electronic resource]  c1976  aAbstract: The influence of (1) lactation and (2) three different hormone treatments were measured in fall lambing ewes. By day 67 postpartum, considering lactation effect, 89% of nonlactating and 33 % of lactating ewes showed estrous behavior (P&lt0.05). Nonlactating control ewes ovulated significantly sooner postpartum than ewes in other treatment groups. Both nonlactating and lactating ewes ovulated prior to demonstrating estrus. In the hormone treatments those containing estrogen tended to have earlier estrus which is assumed to reflect a direct effect. Uterine involution in all animals was generally complete by day 24. No apparent treatment differences in uterine epithelial cells, gland number and size, edema, or interstitial hemorrhage were noted during the 67-day postpartum period studied. Data from this study indicate that the reproductive tract appears acceptable for rebreeding several weeks before the ewes show behavioral estrus.  aEstrogens  aLactation  aPharmacology  aPhysiology  aPregnancy  aReproduction  aSheep  aUterus  aFisiologia  aOvino  aReprodução  aComportamento reprodutivo  aDrug effects  aGonadal Steroid Hormones  aOvary1 aFOOTE, W. C.1 aECKRE, C. D.1 aHULET, C. V.  tTheriogenologygv. 6, n. 5, p. 495-501, Nov. 1976.