In a single day’s work, Prof. W. B. Currie, animal science had chartered an airplane, battled a flood, and stood knee-deep in thousands of sheep placentas. With a grin, Currie recalls an Australian experiment synchronizing 10,000 sheep pregnancies at once.
Using a syringe full of semen, the sheep were all impregnated on the same day so they would all give birth around the same time using a syringe full of semen. The researchers Currie worked with then waited five months for nature to take its course. The scientists then gave the sheep a hormone injection that induces pregnancy in 24 hours.