赛加羚羊的分娩行为

The Parturition Behavior of Saiga tatarica

通过实际观察和资料统计分析表明:赛加羚羊的产羔季节在每年5—6月份。分娩过程可分为开口期、产出期和胎衣排出期,各期时间分别为61.00±83.95、85.25±62.65、107.11±29.73分钟。若产双羔两个胎儿产出间隔时间为37.5(20—55分钟);两个胎衣排出间隔58.5(43—74)分钟。胎衣子叶型,纵向排列成数行。产单羔胎衣子叶数为78.60±35.58个;双羔胎衣子叶数46.17±11.72个,同胎两羔胎衣子叶数不等。产羔后恶露排出期5—15天。

The parturition season of Saiga tatarica is from May to June every year. The parturition process can be divided into three phases, starting phase, expulsive phase and placenta excluding phase, which last 61.00±83.95, 85.25 ± 62.65 and 107.11±29.79 minutes respectively. If two lambs are delivered, the parturient interval is 37.5 minutes(20 min to 55 min), while the interval of placenta-excluding is 58.5 minutes ( 43 min to 74 min). The placenta of Saiga tatarica belongs to cotyledonous placenta and the cotyledons arrange in several lines vertically. The namber of the cotyledons is 88.60±35.58 in the placenta for one infant birtb and 46.17±11.72 in the placentae for two infants birth. The number of cotyledons varies in the placenta of twins. Thischarg of lochia takes 5-15 days.