Our objective was to investigate the lipid content of uterus, blood plasma, and milk at early, mid, late diestrus. Lactating cows (n = 30) had estrous cycle ovulation synchronized by administration exogenous hormones. Cows were blocked parity assigned randomly receive transcervical uterine flushing biopsy on d 5 (early diestrus), 10 (mid diestrus) or 15 (late cycle. Flushing endometrial perform...

The concept of superfetation, a second conception during pregnancy, has been controversial for a long time. In this paper we use an experimental approach to demonstrate that female European brown hares (Lepus europaeus) frequently develop a second pregnancy while already pregnant and thereby increase their reproductive success. After a new, successful copulation, we confirmed additional ovulati...

Concentrations of oestradiol-17 beta and oestrone were measured in the uterine arterial and venous blood of anaesthetized sows on Days 11, 13 or 15 of the oestrous cycle or of pregnancy. Uterine arterial blood flow and the amounts of oestradiol-17 beta and oestrone in uterine flushings were determined in the same animals. In pregnant animals arterial and venous concentrations were significantly...

BACKGROUND Uterine receptivity and implantation are complex processes requiring coordinated expression of molecules by zygote and uterus. Our objective was to evaluate the role of the endometrial expression of leukemia inhibitory factor (LIF) and its glycoprotein 130 (gp130) receptor molecules and their secretion in uterine flushing during the window of implantation in cases of primary unexplai...

Embryos were removed by flushing the oviducts or uterine horns on Days 1, 2, 3, 4, 5, or 6 of pregnancy or pseudopregnancy. Progesterone profiles of pregnant, flushed pregnant, pseudopregnant and flushed pseudopregnant does were identical until Day 12 post coitum regardless of the day of flushing. After Day 12, the profiles of intact pregnant does were different from those of the other three gr...

Sixty Ghezel ewes (age 3.5 years) were used to study the effect of different nitrogenous supplements in flushing ration on reproductive performance. Experimental treatments were divided in five groups: group A: urea; group B: soybean meal (SBM); group C: corn gluten meal (CGM); group D: barley grain and group E: control or basal diet (no flushing). The four flushing rations had nearly the same ...

This study was designed to investigate the relationship between the estrous cycle phases with uterine bacterial and fungal flora in non-pregnant female rabbits. Thirty laboratory mature multiparous rabbits were used for this purpose. Samples from uterine lavage for culture of bacteria and fungi were collected at different stages of estrous cycle (based on vaginal cytology), and histopathologica...