Guérin P, Thiébault J J, Delignette-Muller M L, Badinand F, Bosc L, Ménézo Y
Unité Biologie de la Reproduction, Ecole Nationale Vétérinaire de Lyon, BP 83, 69280 Marcy l'étoile cedex, France.
Vet Rec. 2004 Mar 13;154(11):326-8. doi: 10.1136/vr.154.11.326.
A caesarean section was performed on 30 cows before normal term and 16 to 20 hours after the induction of parturition with dexamethasone. During the surgical procedure, 20,000 U of bacterial collagenase was injected into the uterine artery of 15 of the cows. The average periods of retention of the fetal membranes were 40 hours in the treated cows and 114 hours in the control cows (P<0.001). At 36 hours after the surgery six of the treated cows (40 per cent) but all 15 of the control cows had retained fetal membranes. The collagenase-treated cows showed no abnormal clinical signs during the 10 days after the operation.
在预产期前对30头奶牛进行剖宫产，并在用地塞米松引产16至20小时后进行手术。手术过程中，对15头奶牛的子宫动脉注射了20000单位的细菌胶原酶。处理组奶牛胎膜平均滞留时间为40小时，对照组为114小时（P<0.001）。术后36小时，处理组6头奶牛（40%）胎膜滞留，而对照组15头奶牛均胎膜滞留。胶原酶处理组奶牛术后10天内未出现异常临床症状。
