Seroprevalence of zoonotic abortive diseases and their associated risk factors in Tunisian sheep

BMC Veterinary Research

Table 2 Univariable analysis of abortion-related factors of sheep in the organized farms in Tunisia

Risk factors	Category	Brucellosis			Toxoplasmosis			Q fever
Risk factors	Category	No. of negative	No. of positive	P	No. of negative	No. of positive	P	No. of negative	No. of positive	P
History of infertility	No	608	105	0.0012	569	144	0.2	609	104	0.0000
History of infertility	Yes	57	23		68	12		48	32
Control of new introduction	No	157	44	0.01	157	44	0.3	135	66	0.0000
Control of new introduction	Yes	508	84		480	112		522	70
Presence of lambing boxes	No	75	11	0.37	57	29	0.0005	74	12	0.4
Presence of lambing boxes	Yes	590	117		580	127		583	124
Common grazing	No	202	82	0.0000	192	92	0.0000	236	48	0.8
Common grazing	Yes	463	46		445	64		421	88
Exchanges of workers between farms	No	633	128	0.011	605	156	0.004	634	127	0.09
Exchanges of workers between farms	Yes	32	0		32	0		23	9
Common watering points	No	514	100	0.83	517	97	0.0000	497	117	0.008
Common watering points	Yes	151	28		120	59		160	19
Presence of abortion on neighboring farms	No	356	72	0.57	360	68	0.003	339	89	0.003
Presence of abortion on neighboring farms	Yes	309	56		277	88		318	47
Age classes (years)	Class I ( ≤ 3 years)	200	40	0.7	195	45	0.6	204	36	0.2
Age classes (years)	Class II ( ≥ 4 years)	465	88		442	111		453	100
Breed	Barbarine	437	90	0.002	445	82	0.0002	439	88	0.0008
	Noir de thibar	196	24		158	62		189	31
	Queue fine de l’Ouest	32	14		34	12		29	17
Herd Size	[size < 300]	388	94	0.0013	394	88	0.2	392	90	0.1
Herd Size	[size > 300]	277	34		243	68		265	46

ISSN: 1746-6148