Your online source for ag news. http://www.producer.com The number of horses infected with West Nile virus is down since the peak of 445 cases in 2003, but that's no reason to become complacent, says Gerald Ollis, Alberta's chief veterinarian. http://www.producer.com/free/editorial/livestock.php?iss=2008-05-08&sec=livestock&sto=51 A single hair from a 2,000 pound bull can reveal more information about that hulking beast than could ever have been imagined 10 years ago. http://www.producer.com/free/editorial/livestock.php?iss=2008-05-08&sec=livestock&sto=52 Steers deliberately infected with BSE at a Lethbridge laboratory have all died of the disease as expected. http://www.producer.com/free/editorial/livestock.php?iss=2008-05-08&sec=livestock&sto=55 An international study to learn about potential human health risks associated with chronic wasting disease started May 1. http://www.producer.com/free/editorial/livestock.php?iss=2008-05-08&sec=livestock&sto=56 RED DEER - One saddle does not fit all horses or riders, says a saddle maker, horse trainer and show judge from Penhold, Alta. http://www.producer.com/free/editorial/livestock.php?iss=2008-05-08&sec=livestock&sto=57