Dear Marta, I remember that there have been long time experiments with cattle ploughing in the Lejre Forsogcenter in Denmark. I am quite sure there is something published, but I do not have a reference. Here is the website: http://www.sagnlandet.dk/ Best Christian -- KNOCHENARBEIT Hans Christian Küchelmann Diplom-Biologe Konsul-Smidt-Straße 30, D-28217 Bremen, Germany tel: +49 - 421 - 61 99 177 fax: +49 - 421 - 37 83 540 mail: [log in to unmask] web: http://www.knochenarbeit.de web: http://www.knochenarbeit-shop.de Am 24.11.2010 um 09:09 schrieb Marta Moreno García: > Dear all, > > A friend of mine wrote to me yesterday to query about cattle used > in ploughing. Since I did not have a straight answer I am asking > for your help. Here are the three questions: > > 1) Are there any estimations on the working life of cattle used in > such activity? > 2) Which is the age they usually start working? > 3) How many hectares can a couple of animals plough on a single day? > > I would appreciate very much if you could send me any references > dealing with this topic. > > Best, > Marta > > -- the three questions > Dra. Marta Moreno-García > G.I. Arqueobiología. > Instituto de Historia > Centro de Ciencias Humanas y Sociales (CCHS). CSIC > Albasanz 26-28. 28037 Madrid. Spain > Tel: +34 91 6022384 > e-mail: [log in to unmask]