Cross D T, Ginther O J
Dept. of Vet. Sci., University of Wisconsin-Madison 53706.
J Anim Sci. 1988 Jan;66(1):250-4. doi: 10.2527/jas1988.661250x.
Uterine contractions in 8 nonpregnant and 13 pregnant mares were studied using ultrasonography. A 1-min video tape recording was made of longitudinal real-time images of the uterine body. An overall uterine contractile activity score (0 = no or minimal activity to 4 = maximal activity) was assigned to each video tape segment. There was a day effect (P less than .01) and an interaction (P less than .01) of reproductive status X day. Uterine activity scores were highest on d 14 to d 18 (d 0 = day of ovulation) for nonpregnant mares and on d 10 to d 14 for pregnant mares. Uterine activity scores on d 10, d 12, and d 14 were greater (P less than .02) for pregnant mares (2.5 +/- .3, 3.1 +/- .3, and 3.2 +/- .1, respectively) than for nonpregnant mares (1.2 +/- .3, 1.5 +/- .3, and 2.6 +/- .3). Uterine activity scores for six pregnant and five nonbred jennies were assigned daily from d 0 to d 24. There were main effects of reproductive status and day (P less than .01) and an interaction of status X day (P less than .01). Uterine activity scores for pregnant jennies were highest on d 13 and d 14 and then declined. In the nonbred jennies, scores were highest on d 14 to d 20. The mean score on d 13 was greater (P = .05) in pregnant jennies (2.8 +/- .2) than in nonbred jennies (1.9 +/- .5).(ABSTRACT TRUNCATED AT 250 WORDS)
使用超声检查对8匹未孕母马和13匹怀孕母马的子宫收缩情况进行了研究。对子宫体的纵向实时图像进行了1分钟的录像。为每个录像片段指定了一个总体子宫收缩活动评分（0 = 无活动或最小活动至4 = 最大活动）。存在生殖状态×天数的日效应（P <.01）和交互作用（P <.01）。未孕母马在排卵日（第0天）后的第14至18天子宫活动评分最高，怀孕母马在第10至14天最高。怀孕母马在第10、12和14天的子宫活动评分（分别为2.5±.3、3.1±.3和3.2±.1）高于未孕母马（1.2±.3、1.5±.3和2.6±.3）（P <.02）。从第0天到第24天每天对6匹怀孕和5匹未配种母驴的子宫活动评分进行记录。存在生殖状态和天数的主效应（P <.01）以及状态×天数的交互作用（P <.01）。怀孕母驴的子宫活动评分在第13和14天最高，然后下降。在未配种母驴中，评分在第14至20天最高。怀孕母驴在第13天的平均评分（2.8±.2）高于未配种母驴（1.9±.5）（P =.05）。（摘要截断于250字）
