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马犬配种后多少天只到怀胎
更新时间: 2020-10-20 00:00:00  

母犬妊娠的征兆是在交配后的一星期左右出现。

具体表现为:受胎母犬其阴部会迅速收缩,怀孕三四周时可能会出现呕吐、食欲不振等妊娠反应,妊娠20到30天时,孕犬乳腺突出,乳房胀大,乳头呈桃红色。在配种后第四周用手触摸母犬腹部子宫所在位置,妊娠母犬可感觉到有如鸡蛋大小的胚胎。临产征兆:母犬在临产前的3天左右体温便开始下降,正常的直肠温度为38度到39度,在分娩前会下降0.5度到1.5度。如果体温开始回升,则表明犬即将分娩。

关键词: 配种 多少 怀胎

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