Update on the state of play of animal cloning


European Food Safety Authority
EFSA Journal
EFSA Journal 2010:8(9):1784 [21 pp.].

EFSA wishes to thank the Scientific Committee members and external peer reviewers for reviewing the statement and EFSA staff David Carlander for the support provided to this scientific output.

Statement of EFSA
On request from
European Commission
Question Number
14 September 2010
Published in the EFSA Journal
17 September 2010
European Food Safety Authority (EFSA), Parma, Italy

The European Food Safety Authority (EFSA) received in May 2010, a request from the European Commission for an update on the state of play of the possible scientific developments on the issue of cloning of farmed animals for food production purposes. The present statement follows the EFSA 2009 statement and EFSA 2008 scientific opinion and is based on a review of identified peer reviewed scientific literature up to 1 July 2010, information made available to EFSA following a call for data, discussion with experts in the field of animal cloning and a peer review by external experts. Based on the literature search and information provided, it is concluded that there is still limited information available on species other than cattle and pigs which would allow for assessment of food safety and animal health and welfare aspects. Cloning efficiency in cattle (currently around 10 %) and pigs (currently around 6 %) is lower than by natural breeding (cattle calving rate 40-55 %) as well as from assisted reproductive technologies (ART), such as artificial insemination. However, compared with in vitro produced embryos and embryo transfer in pigs, cloning has similar efficiency (~ 6 %). No new information has become available, since the EFSA 2009 statement and the EFSA 2008 scientific opinion that would lead, at this point in time, to a reconsideration of the conclusions and recommendations related to the food safety, animal health and welfare aspects of animal cloning as considered in the 2008 scientific opinion and the EFSA 2009 statement.

SCNT, Somatic Cell Nuclear Transfer, Efficiency, Safety, Cattle, Pig
Print on demand
Number of Pages