PRENATAL DEVELOPMENT OF THE ALPACA (LAMA-PACOS)
PRENATAL DEVELOPMENT OF THE ALPACA (LAMA-PACOS)
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DOI：
10.1016/0378-4320(93)90096-a
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发表时间：
1993-09-01
影响因子：
2.2
通讯作者：
VARELA, MH
中科院分区：
文献类型：
--
作者：
BRAVO, PW;VARELA, MH
研究了羊驼的产前发育。描述了在整个怀孕期间通过直肠触诊对生殖道进行的评估。在秘鲁库斯科的 La Raya 研究站，从类似数量的怀孕女性中收集了 48 个胚胎/胎儿。通过最小二乘回归分析胎儿数据。百分之九十八的胎儿位于左侧子宫角；然而，黄体均匀分布在左右卵巢之间。 怀孕的子宫在怀孕90天之前一直位于盆腔内，此后，子宫位于腹腔内的颅骨至骨盆边缘。成熟期体重、冠臀长、脊柱长、弯曲冠臀长的生长曲线呈二次曲线。 60天时即可辨别胎儿性别。 210 天时，嘴唇、眉毛和尾巴上出现了毛发。怀孕 240 天时，身体已完全被纤维覆盖。乳腺的重量在分娩前30天才开始增加。
The prenatal development of the alpaca was studied. An evaluation of the reproductive tract by rectal palpation was described throughout pregnancy Forty-eight embryos/fetuses were collected from a similar number of pregnant females at La Raya research station, in Cusco, Peru. Fetal data were analyzed by least squares regression. Ninety-eight percent of fetuses were located in the left uterine horn; however, corpora lutea were distributed evenly between the left and right ovaries. The pregnant uterus was within the pelvic cavity until 90 days of pregnancy, thereafter, the uterus was located cranial to the brim of the pelvis within the abdominal cavity. The growth curves of body weight, crown-rump length, vertebral column length, curved crown-rump length-were quadratic in mature. The sex of the fetus could be distinguished at 60 days. Hair was present on the lips, eyebrows and tail at 210 days. The body was completely covered by fiber by 240 days of gestation. The mammary gland began to increase in weight only 30 days prior to parturition.