And the target weight for first conception varies, according to circumstances, from 90-115kg . 第一次妊娠较理想体重因情况而异，范围在90115公斤之间。
Edema extending from the udder to the umbilicus is frequently observed during late gestation in cows and mares . 牛和马在妊娠期自乳房至脐部常出现水肿。
The energy economy of pregnancy is dominated by the biological adaptation of pregnancy anabolism . 妊娠的能量利用，受妊娠期合成代谢的生物学适应性所支配。
The gestation period in cattlethe time that elapses between conception and birthis about 287 days . 牛的妊娠期（即从怀孕到生产的这段时间）大约是287天。
Propranolol increases the activity of the human uterus, more in the nonpregnant than in the pregnant state . 心得安可增强人的子宫的活动，非妊娠子宫比妊娠子宫更敏感。
Hypophysectomy before implantation terminates pregnancy and after the 44th day of gestation causes abortion in the goat . 山羊与附植前切除下立脑可使妊娠终止，而在妊娠44天后切除则造成流产。
Parturition is defined as the physiologic process by which the pregnant uterus delivers the fetus and placenta from the maternal organism . 分娩的定义是妊娠子宫将胎儿和胎盘从母体排出的过程。
In marsupials, such as opossum and kangaroo, the life span of the corpus luteum is similar in pregnant and nonpregnant females . 在有袋目动物中，如负鼠和袋鼠，妊娠和非妊娠母兽的黄体存在时间相似。
The changing demand during pregnancy is buffered by the mobilization of fat reserves in the latter half of the pregnancy period . 整个妊娠期变化的要求，是通过妊娠后半期消耗体内储存的脂肪来缓冲的。
The changes in protein requirements as pregnancy proceeds are counter-balanced by the increased efficiency of protein utilisation . 当妊娠继续进展时，蛋白质需要的变化，可由妊娠蛋白质利用效率增高来加以平衡。
