Efficacy of antiserum protections of the piglets against virulent transmissible gastroenteritis virus

control de enfermedades controllo delle malattie disease control gastroenterite gastroenteritis immune serum immunserum in vivo experimentation piglets porcelet servicios veterinarios servizi veterinari siero immune sperimentazione in vivo suero inmune suinetti transmissible gastroenteritis virus veterinary services virus gastroenteritis transmisible