“…Compared with other studies that detected antibodies in bovine fetal serum samples in Brazil, the frequency detected in this study was higher than the 1.4% found by Marques et al (2011) and similar to those detected by Guedes, Guimarães, Rocha and Hirsch (2008), Cadore, Vogel, Sangioni, Pena and Gennari (2010), and Amaral et al (2012), i.e., 12.7%, 115%, and 16.7%, respectively. In Argentina, Moore et al (2002) detected antibodies in 12.1% of fetal bovine serum samples collected in abattoirs.…”