Seroprevalence of Infectious Bronchitis Virus in Broiler and Layer Farms of Central Ethiopia

Table 3

Prevalence of IBV among different associated risk factors.

Factors		No. of sample	No. of positive	Seroprevalence		value
Farm type	Commercial	230	226	98.26%	1.70	0.28
	Small holder	124	119	95.98%
Breed	Bovans Brown	145	145	100%	6.41	0.04
	Cobb 500	209	200	95.69%
Age	Young	209	200	95.69%	6.41	0.04
	Adult	145	145	100%
Sex	Male	64	64	100%	2.03	0.22
	Female	290	281	96.89%
Production purpose	Broiler	209	200	95.69%	9.64	0.01
	Layer	145	145	100%

χ²: chi-square.