Table 1. Antibody positive rates against MG or MS in broiler breeders of a Korea integration company by year
Year
No. of flock
No. of individual
Test
Positive (%)
Test
Positive (%)
2016
6
100
1,613
84.4
2017
8
75
1,097
35.7
2018
5
0
1,397
7.2