Study of the motility of the avian oviduct with chronically implanted electrodes

Influence of Prostaglandin E2 on Myoelectrical Activity of the Uterus and Vagina in the Domestic Hen

“…As previously reported by Shimada (1978) and Roche and Brard (1978), uterine electrical activity was minimal during the period between oviposition and 5 hr after oviposition. No significant differences of uterine electrical baseline activity were observed between hens in this quiescent postoviposition period.…”

“…Electrodes (insulated Nichrome wire; diameter, 110 iim) were implanted into the wall of the middle part of the uterus, UVJ, vagina, 1 To whom correspondence should be addressed. and duodenum for electromyographic (EMG) measuring (Roche and Brard 1978) and into the subcutis of the neck and breast [electrocardiogram ECG) lead] for heart rate recording.…”

Electrical activity of the infundibulum in relation to ovulation in the chicken

“…Studies on infundibular motility in vitro have been reported (Chen & Hawes, 1970;Verma, Prasad & Slaughter, 1976;Crossley, Ferrando & Eiler, 1980) but the activity was not correlated with engulfing ability. Crossley, Ayuy & Ferrando (1975), Talo & Kekäläinen (1976), Roche & Brard (1978) and Shimada (1978) have made observations on the avian oviduct in vivo but did not study the infundibulum. The present study was undertaken to examine changes in infundibular motility in relation to engulfing the shed ovum.…”