Swan R A, Sicouri O
Division of Veterinary and Biomedical Sciences, Murdoch University, Perth, Western Australia.
Aust Vet J. 1999 Oct;77(10):649-50. doi: 10.1111/j.1751-0813.1999.tb13152.x.
To determine the length of time following mating that fertile eggs can be laid by an ostrich (Struthio camelus).
A clinical reproductive problem in a pair of breeding ostriches provided the opportunity to mate the birds at intervals of 5 to 8 days and assess the fertility of the eggs laid.
Following prolapse of the phallus of the male ostrich during the breeding season, the pair were immediately separated. The hen was reintroduced to the cock at intervals of 5 to 8 days over a 6 week period for supervised mating. Records were kept of dates of mating and laying, number of eggs laid, egg weights, and fertility determined by candling after 2 weeks incubation.
Over the 6 week period, 10 eggs were laid, of which 8 were fertile and 2 infertile. Fertile eggs weighed 1020 to 1285 g (mean 1143). The two infertile eggs weighed 1160 and 925 g. Six fertile eggs were laid 2 to 7 days after mating. The remaining two fertile eggs were laid the same days that mating occurred, suggesting that fertilization resulted from the last matings 5 and 8 days previously, or from earlier matings.
Sperm storage occurs in ostrich hens and fertile eggs can be laid for at least 5 to 8 days after copulation. Further studies are required to demonstrate the maximum period during which stored sperm are capable of successful fertilization.
确定鸵鸟（鸵鸟属）交配后可产出可育卵的时间长度。
一对繁殖鸵鸟出现的临床生殖问题提供了一个机会，即每隔5至8天让这些鸟交配一次，并评估所产卵子的受精情况。
在繁殖季节雄性鸵鸟阴茎脱垂后，这对鸵鸟立即分开。在6周的时间里，每隔5至8天让母鸡与公鸡重新配对进行监督交配。记录交配和产卵日期、产卵数量、蛋重以及孵化2周后通过照蛋确定的受精情况。
在6周的时间里，产下了10枚蛋，其中8枚受精，2枚未受精。受精蛋重1020至1285克（平均1143克）。两枚未受精蛋重1160克和925克。6枚受精蛋在交配后2至7天产下。其余两枚受精蛋在交配当天产下，这表明受精是由5天和8天前的最后一次交配，或更早的交配所致。
鸵鸟母鸡存在精子储存现象，交配后至少5至8天仍可产出可育卵。需要进一步研究以证明储存精子能够成功受精的最长时间。
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