Serological Evidence of Infectious Laryngotracheitis Infection and Associated Risk Factors in Chickens in Northwestern Ethiopia

Table 1

Summary of potential risk factors and their respective frequency.

Potential factors	Categories	Frequency (%)
Zone	Central Gondar	256 (33.3)
	South Gondar	256 (33.3)
	West Gojjam	256 (33.3)
Breed	Local	415 (54)
	Exotic	353 (46)
Sex	Male	219 (28.5)
	Female	549 (71.5)
Farm type	Intensive	213 (27.7)
	Extensive	555 (72.3)
Production type	Layer	445 (57.9)
	Broiler	171 (22.3)
	Dual	153 (19.8)
Age	Young (3 week-21 week)	201 (26.2)
	Adult (>21 week)	567 (73.8)
Feed source	Locally prepared	119 (15.5)
	Commercially prepared	649 (84.5)
Batch management	All in-All out	130 (16.9)
	Different batches in one house	638 (83.1)
Ventilation	Well ventilated	584 (76)
	Partially ventilated	184 (24)
Litter management	Buried	69 (9)
	Used as fertilizer	426 (55.5)
	Accumulate near space	273 (35.5)
House disinfection	Disinfected after each batch	226 (29.4)
	No disinfection	542 (70.6)
Carcass management	Burying or burning	131 (17.1)
	Throwing to nearby place	637 (82.9)
Protective footwear and clothing	Available	105 (13.7)
	Not available	663 (86.3)
Total		768 (100)