Changes of Antibody Level in Piglets after the First Vaccination with Class Swine Fever on Day of 21 after Birth
WANG Ji-ying, NIU Xiao-yan, HAO Xiao-jing, ZHAO Hong-mei, NI Gui-yan, ZHANG Qin
ACTA AGRICULTURAE BOREALI-SINICA . 2011, (S1): 283 -286 .  DOI: 10.7668/hbnxb.2011.S1.057