Translate the following English sentence to French:
"A large number of French departments - I think about 23 departments - had not apparently been monitoring for BSE in the cattle populations within their departments, although they were departments in which there were a large number of dairy cattle."
Un grand nombre de départements français - environ 23 départements, je pense - n'avaient apparemment pas procédé à des contrôles ESB de leur cheptel alors même qu'ils comptaient une importante population de vaches laitières.