Table 1.

ALV-Positive rate in the farms investigated in this study.

Breed name	Samples collected	Positive samples	Positive rate (%)
Ningdu yellow chicken	70	3	4.29
Taihe silky fowl	50	9	18.00
Anyi tile-like grey chicken	100	29	29.00
Dongxiang blue-shell chicken	100	19	19.00
Chongren chicken	60	1	1.67
Guangfeng baier yellow chicken	60	7	11.67
Xiushui black-bone chicken	70	2	2.86
Yugan black chicken	50	1	2.00
Total	560	71	12.68