Maxwell J A
Aust Vet J. 1977 Apr;53(4):181-3. doi: 10.1111/j.1751-0813.1977.tb00165.x.
The incidence and effect on reproduction of a constriction of the vagina was studied in 12 maiden merino flocks on 5 commercial properties in Western Australia. The overall incidence of the constriction was 11% with a range of from 2% to 27%. Ewes with a constriction of the vagina exhibited inferior reproductive capacity; fewer ewes lambed and of those that did fewer reared their lambs. A higher lamb mortality was recorded in lambs born to such ewes.
在西澳大利亚州5个商业养殖场的12个美利奴处女羊群中，对阴道狭窄的发生率及其对繁殖的影响进行了研究。阴道狭窄的总体发生率为11%，范围在2%至27%之间。阴道狭窄的母羊繁殖能力较差；产羔的母羊较少，而产羔的母羊中能够哺育羔羊的更少。此类母羊所产羔羊的死亡率更高。
