http://www.animalbytes.org/index.php/2009/10/14/genotype-has-the-greatest-influence-on-pig-performance-whereas-improvements-due-to-vaccination-against-pcv2-is-dependent-on-herd-health-status/ Your guide to the latest developments in Animal Science Sat, 19 May 2012 01:24:12 +0000 http://wordpress.org/?v=2.7.1 hourly 1