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狗难产症状有哪些

狗难产症状有哪些

直肠降温(降至37℃)持续24小时未生产;腹壁强力收缩持续30-60分钟,新生胎儿未产出;主动分娩1-2小时无幼仔排出,或主动分娩时,其休息期超过4~6小时。

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