1.   But exacerbating the problem, he said, is the fact that many females never produce calves.

2.   Rather than raising cattle to the size necessary for slaughter, Florida cattlemen produce calves that are then shipped to feed lots in the West and Midwest.

3.   University of Georgia scientists have produced a calf from a dead cow in a revolutionary application of technology that could make available more consistent choice cuts of beef.

4.   Yet, those cells still produced cloned calves that were as young as calves are supposed to be.

5.   Scientists in the United States have produced a calf using techniques which produced Dolly, the cloned sheep, the company said Monday.

6.   The cloned calves were produced by combining the nucleus of a mammary cell with an unfertilized egg and inserting the embryo into the uterus of a surrogate cow.