The cows were scanned in the 30th day after fertilization, thickening of uterine wall, allantois, embryo and placentome were revealed in the ultrasonography, and the heartbeat of embryo had not been detected.

  • 本试验对妊娠30d左右的母牛的探查可以看到增厚的子宫壁、尿囊腔、胚胎、胎盘突等回声,没有观察到胚心搏动。

  • 互联网摘选 2025-01-19 23:53:31

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