Root Kustritz Margaret V
University of Minnesota, College of Veterinary Medicine, 1352 Boyd Ave., St. Paul, MN 55108, USA.
Theriogenology. 2006 Jul 1;66(1):145-50. doi: 10.1016/j.theriogenology.2006.03.018. Epub 2006 Apr 18.
Average gestation length in domestic cats is 65.6 days, with a range of 52-74 days. Average reported litter size is 4.0 kittens per litter; litter size is not correlated with number of matings in a given estrus. Superfecundation is common in domestic cats; superfetation never has been definitively proven to occur. Eclampsia may occur during pregnancy in queens, with non-specific clinical signs. Ectopic pregnancy and uterine torsion have been reported. Pregnancy loss may be due to infectious causes, including bacteria, viruses or protozoa, or non-infectious causes, such as hypoluteoidism and chromosome errors.
家猫的平均妊娠期为65.6天，范围在52至74天之间。报告的平均窝产仔数为每窝4.0只小猫；窝产仔数与特定发情期的交配次数无关。异期复孕在家猫中很常见；从未有确凿证据证明有胚体超期着床现象发生。母猫在怀孕期间可能会发生子痫，临床症状不具特异性。已有异位妊娠和子宫扭转的报告。妊娠丢失可能是由包括细菌、病毒或原生动物在内的感染性原因，或诸如黄体功能不全和染色体错误等非感染性原因导致的。
