作者:A. N. Mayer,∗ S. L. Vieira,∗,1 E. Berwanger,∗ C. R. Angel,† L. Kindlein,‡ I. Franca,∗and T. L. Noetzold∗
完成单位:
∗Department of Animal Sciences, Federal University of Rio Grande do Sul, Porto Alegre 91540-000, Rio Grande do Sul, Brazil;
†Department of Animal and Avian Sciences, University of Maryland, College Park 20742, Maryland, USA;
‡Department of Preventive Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre 91540-000, Rio Grande do Sul, Brazil