Seyed Aliousat Hosseini likes the comment:
Dr. Nati Elkin Hi,The combination of 793B and Mass strains in Turkey, Lithuania, Belorussia, Poland and other countries was unable to protect from IS1494/06 (Var2). Veterinarians and farmers in these countries have tried the combination for a long time in various programs but all failed. One of the problems are drop in production and the 2nd infections arising even after a very mild clinical sign. ...
This member had joined Engormix
December 6, 2017