Spontaneous uterine activity during the oestrous cycle of the camel (Camelus dromedarius)

Camel Research Centre, College of Veterinary Medicine and Animal Resources, King Faisal University, P.O. Box 1757, Al-Ahsa 31982, Saudi Arabia
Animal Reproduction Science (Impact Factor: 1.58). 07/1993; DOI: 10.1016/0378-4320(93)90060-5

ABSTRACT Spontaneous uterine activity was studied in three cyclical female camels implanted with balloon-tipped catheters connected to pressure transducers. Another camel was not operated upon. The frequency of contractions in both horns varied from zero to a maximum of 90 h−1, whereas the amplitude of contractions varied from zero to a maximum of 3.5 kPa during the experimental period. Uterine activity was higher in the left horn. Concentrations of oestradiol-17β increased as the follicle grew in size in the non-operated camel. The pattern of uterine activity was correlated with the circulating levels of oestradiol-17β (r=0.83, P<0.001, n=3). It was concluded that uterine activity in the camel is dependent on oestrogen level.