Aissi A, Slimani C
Surgery and Imaging Service, Department of Veterinary, Faculty of Sciences, Batna University, Batna 05000, Algeria.
Pak J Biol Sci. 2008 Jul 1;11(13):1750-3. doi: 10.3923/pjbs.2008.1750.1753.
Ultrasonographic examinations of 10 pregnant bitches with known breeding dates were made on successive days to establish the identifiable characteristics of pregnancy. Subsequent serial examinations were made to sonographically characterize normal canine prenatal development based about the first mating. The initial detection of the fetal and extra-fetal structures were as follows: gestational sac at day 17.88 +/- 1.13 (16-21); zonary placenta in the uterine wall at day 23.70 +/- 0.78 (23-25); embryo initial detection at day 22.80 +/- 1.03 (21-24); heartbeat at day 23.0 +/- 0.94 (22-24); yolk sac membrane at day 24.8 +/- 0.78 (24-26); amnionic membrane at day 26.81 +/- 0.60 (26-28); fetal movement at day 30.40 +/- 1.64 (28-32); stomach at day 33.40 +/- 1.07 (32-35); urinary bladder at day 34.90 +/- 1.19 (33-37); skeleton at day 35.10 +/- 0.73 (34-36).
对10只已知配种日期的怀孕母犬进行连续超声检查，以确定怀孕的可识别特征。随后进行系列检查，根据首次交配情况，通过超声对正常犬类产前发育进行特征描述。胎儿和胎儿外结构的初始检测结果如下：妊娠囊在第17.88±1.13天（16 - 21天）；子宫壁上的带状胎盘在第23.70±0.78天（23 - 25天）；胚胎初次检测在第22.80±1.03天（21 - 24天）；心跳在第23.0±0.94天（22 - 24天）；卵黄囊膜在第24.8±0.78天（24 - 26天）；羊膜在第26.81±0.60天（26 - 28天）；胎动在第30.40±1.64天（28 - 32天）；胃在第33.40±1.07天（32 - 35天）；膀胱在第34.90±1.19天（33 - 37天）；骨骼在第35.10±0.73天（34 - 36天）。
