Comparative Seroepidemiological Study of Brucellosis in Sheep under Smallholder Farming and Governmental Breeding Ranches of Central and North East Ethiopia

Table 6

Seroprevalence of brucellosis in flock size and sex of the animals in relation to production system.

	Small holders farms				Breeding ranches
	Number of tested	Positive (%)	X^2 (P)	95% CI	Number of tested	Positive (%)	X^2 (P)	95% CI
Sex
Male	828	25 (3.01)		2.41-4.34	105	1 (0.95)		0.42-3.83
Female	1010	83 (8.21)		5.2-11.8	466	9 (1.93)		1.01-4.63
Total	1838	108 (5.87)	24.1 (0.00)	4.64-7.55	571	10 (1.75)	11.45 (0.16)	0.86-4.03
Flock size
1-10	149	15 (10)		6.71-14.1	-	-	-
11-20	61	17 (27.86)		21.8-30.3	-	-	-
>20	56	21 (37)		31-44.53	8	8 (100)		-
Total	266	53 (19.92)	27.45 (0.000)	15.4-24.3	8	8 (100)	18.23 (0.045)	-