Electrical activity was recorded from the smooth muscle layer of the infundibulum of unanaesthetized hens during the ovulation cycle. There were low-frequency isolated spike potentials throughout the cycle except for the period near ovulation. There were intermittent bursts of spike potentials about 1 h before ovulation and then an increased frequency of spike potentials near the time of ovulat...

a quint uplets pregnancy fo l l owing clomiphene- i nduced o vulation is presente d a s a mat ter o f r e cord. the i mportance of keepi ng i n mi nd s uch a serious complication is emphasized i n or de r t o achieve early di agnosi s and approp r i a te management. in pregnancies f ollowing c lomiphene treatment, close s upervi s ion i s inperati v e a s soon as the pregnancy i s evident.

BACKGROUND This study was undertaken to assess whether the use of clomiphene citrate in conjunction with albumin-separated sperm would alter the sex ratio (expressed as the proportion of males) towards females and, if so, whether this skewing was due solely to the induction of ovulation. METHODS The sex ratios of 184 single and 42 twin births at five assisted reproduction biology clinics were...

We investigated a simple method using induced ovulation in immature rats to detect ovarian injury due to chemicals. We investigated the influence of di-(2-ethylhexyl) phthalate (DEHP) on ovulation induced by equine chorionic gonadotropin (eCG) in immature F344 rats. Single injections of 15 and 30 iu eCG induced ovulation in 4 of 6 rats and in all of 4 rats, respectively. The mean number of ovul...

Induced ovulation of small dominant follicles (SF, < 12 mm; CO-Synch protocol) in postpartum beef cows resulted in formation of corpora lutea (CL) that exhibited a delayed rise in progesterone (P4) compared with CL from large dominant follicles (LF, > 12 mm). Experiment 1 characterized P4 concentrations from ovulation to subsequent estrus among GnRH-induced or spontaneously ovulated SF (<or= 11...

This study investigated the effect of GnRH analogues on inducing ovulation of dominant follicle (DF)and subsequent corpus luteum (CL) lifespan in the presence of norgestomet implant in Holstein heifers. Onday 6 to 8 of the estrous cycle (day 0 of the experiment), all heifers (n=15) received norgestomet implantfollowed by prostaglandin injection on days 0 and 1. On day 4, group 1 (n=4) and 2 (n=...

In postpartum cows, ovulatory follicle size at time of insemination (GnRH/TAI) influenced pregnancy rates following TAI, but had no effect on pregnancy rates when cows spontaneously ovulated. Furthermore, cows that exhibited estrus (± 24 h of GnRH/TAI) had higher pregnancy rates compared to cows not in estrus. The objective was to assess the relationship between ovulatory follicle size and estr...

Abstract This study assessed the effects of social dominance on behavioral estrus and ovarian parameters dairy goats subjected to synchronous induction during non-breeding season. Synchronous was induced in 23 allocated collective pens. Ovarian ultrasonography performed at 12 h intervals from device removal ovulation. Upon onset (EO) detection, were immediately removed Dominance scored accordin...

case presentation the studied patient was a 32-year-old g1p1 woman with abdominal pain who was diagnosed with a large ovarian cyst during ovulation induction, which could possibly raise the risk of ovarian torsion. she had a 2-year secondary infertility and had received three cycles of ovulation induction with letrozole 6 months earlier. an emergency laparoscopy showed large complex ovarian cys...