"Having to shear the sheep for wool is actually very costly and labor intensive.

VOA: special.2009.08.03

In developed countries, microbiologists do these tests with blood from wool sheep or horses.

VOA: special.2009.08.03

It produced the same results as tests using wool sheep and horses.

VOA: special.2009.08.03

Also,hair sheep require less care than wool sheep.

VOA: special.2009.08.03