Table 5.

Risk factors affecting the reactivity of cattle to tuberculin test in Jigawa State.

Variable	No. of Reactors (%)	P value
Age
Calves <18 month (n = 150)	1 (0.67)	0.015
Cattle 1.5–3 yrs (n = 343)	0 (0.87)
Cattle >3 yrs (n = 427)	9 (1.4)
Sex
Female (n = 639)	3 (0.46)
Male (n = 283)	7 (2.4)	0.012
Breed
Exotic (n = 72)	0 (0)
Local (850)	10 (1.7)	0.442
Pregnancy
Pregnant (n = 153)	0 (0.65)
Nonpregnant (n = 486)	10 (0.41)	0.039
Lactation
Lactating (n = 135)	8 (1.48)
Nonlactating (n = 1)	2 (0.20)	0.000