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

Table 7

Seroprevalence of brucellosis in relation to history of reproductive problem in breeding ranches and small holder production.

History of reproductive problems	Small holders farms				Breeding ranches
	Number of tested	Positive (%)	X^2 (P)	95% CI	Number of tested	Positive (%)	X^2 (P)	95% CI
Abortion
Present	55	22 (40)		32.1-52.4	16	1 (6.25)		4.1-8.35
Absent	218	34 (15.6)		12.4-18.71	337	6 (1.5)		0.79-3.5
Total	273	56 (20.5)	14.27 (0.001)	16.7-25.2	353	7 (1.7)	12.45 (0.000)	1.02-3.8
Retained fetal membrane
Present	32	16 (50)		36.12-64.7	12	1 (8.3)		5.03-10.7
Absent	241	42 (17)		13.4-25.3	341	6 (1.7)		0.69-3.8
Total	273	56 (20.5)	26.21 (0.001)	18.3-29.08	353	7 (1.9)	8.030 (0.008)	0.8-4.02