Onuma H, Ohnami Y
J Reprod Fertil Suppl. 1975 Oct(23):507-11.
Genital tracts from 227 mares slaughtered in various reproductive states were investigated to study egg retention in the oviducts. Eggs were found in 88-2% of 212 non-pregnant mares; the number/mare ranged from 0 to 21, and averaged 4-34. Retained eggs were twice as common in heavy as in light breeds and were found more frequently in early than in late pregnancy. Eggs were not found in the oviducts of two anovulatory post-partum mares. A few globular masses, probably consisting of desquamated tubal mucosa, were frequently lodged in the distal region of the ampulla and appeared, to some extent to cause the retention of more eggs.
对227匹处于不同生殖状态下被屠宰母马的生殖道进行了研究，以探讨输卵管内卵子滞留情况。在212匹未孕母马中，88.2%发现有卵子；每匹母马的卵子数量从0至21个不等，平均为4.34个。重型品种母马中滞留卵子的情况是轻型品种的两倍，且在妊娠早期比晚期更常见。在两匹产后无排卵母马的输卵管中未发现卵子。一些可能由输卵管黏膜脱落形成的球状团块，经常滞留在壶腹远端区域，在一定程度上似乎导致了更多卵子的滞留。
