Table 3.

Effects of reasons for keeping poultry and number of birds per farm on biosecurity scores.

	Biosecurity score∗ (number of farms‡)
Reason for keeping poultry
Commercial	0.75 ± 0.10a (32)
Family use only (noncommercial)	0.82 ± 0.07ab (3)
Both (semicommercial)	0.87 ± 0.05b (28)
Number of birds per farm
<200	0.80 ± 0.07a (7)
200–500	0.81 ± 0.11a (23)
501–1000	0.79 ± 0.13a (15)
1001–2000	0.80 ± 0.10a (12)
2001–10000	0.85 ± 0.03a (4)
>10000	0.88 ± 0.02a (2)

^a,bUnmatched superscripts on means ± standard deviations indicate significant (p < 0.05) difference in the column for each set of variables.

^∗Average score on correct responses on biosecurity indicators on a farm, where incorrect and correct scores are 0 and 1, respectively.

^‡Farms with ≥ 34 responses on biosecurity (n = 63).