Patterns of oviducal motility in the cow during the oestrous cycle.
Patterns of oviducal motility in the cow during the oestrous cycle.
复制标题
发情周期期间奶牛输卵管运动的模式。
DOI：
--
复制
发表时间：
1988
期刊：
影响因子：
--
通讯作者：
J. W. Fuquay
中科院分区：
文献类型：
--
作者：
W. Bennett;T. Watts;W. D. Blair;S. Waldhalm;J. W. Fuquay
将对内径变化敏感的微换能器长期植入5头奶牛的输卵管中。在9个发情周期中记录运动模式。周期性的运动模式的变化进行了观察，并与血浆孕酮的循环浓度进行了比较。黄体期运动模式的低振幅和频率。在行为发情前3-5天，运动频率和幅度增加。这种活动主要由纵向肌肉收缩组成，在发情期间发生环形肌肉活动的间隔。发情后的活动模式与发情前相似，发情后3-5天活动减少。在2只动物中双侧植入换能器，可观察到左右输卵管之间的异步模式。初步数据表明，在输卵管同侧的活动卵巢的活动水平较高。这些变化可能是由于局部效应，可能由功能卵巢或卵子介导。
Microtransducers sensitive to changes in internal diameter were chronically implanted in the oviducts of 5 dairy cows. Motility patterns were recorded throughout 9 oestrous cycles. Cyclic variations in patterns of motility were observed and compared with circulating concentrations of plasma progesterone. Luteal-phase motility patterns were of low amplitude and frequency. The frequency and amplitude of motility increased 3-5 days before behavioural oestrus. This activity consisted primarily of longitudinal muscle contractions, with an interspacing of circular muscle activity occurring during oestrus. Patterns of activity after oestrus were similar to those before oestrus, with activity decreasing 3-5 days after oestrus. Transducers implanted bilaterally in 2 animals permitted observation of asynchronous patterns between right and left oviducts. Preliminary data suggested a higher level of activity in the oviduct ipsilateral to the active ovary. These variations may be due to a local effect, possibly mediated by the functional ovary or the ovum.