Abstract

New biotechnological inventions demand a different way of monitoring experiments for possible nonhuman animal welfare problems. Only with such a monitoring system in place will review committees be able to render good judgments on new experiments. Nuclear transfer cloning serves as a clear example. In February 1997, the Roslin Institute, situated in Edinburgh, United Kingdom, amazed the world with the birth of Dolly, the healthy, cloned sheep generated from the cell nucleus of the udder of an adult sheep. Although Dolly seems to be in good condition, cloned lambs and calves produced by nuclear transfer have generally been characterized as having a high birth weight, various anatomical and physiological abnormalities, and a low survival rate. Although these symptoms have been observed only in part of the clones, their severity shows a considerable risk of compromised animal welfare following a cloning experiment.

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