I have a small bunch (60) Welsh mule ewe lambs, they came in about 3/4 weeks ago and were given a fluke drench of combinex and dipped, they are looking well and are in good nick with no shitty arses, I have noticed that a few are coughing when under pressure ( when run to new grazing with the dogs) they are on clean ground, before I do a fec test on them I was just wondering if any one had any advice