From: Epidemiology of Cryptosporidium sp. infection among free-range and intensive farm birds in Akure South LGA, Ondo State, Nigeria
System
Number examined
Number infected (%)
χ2
df
P value
Battery cage
107
11 (10.3)
2.017
2
0.365
Deep litter
127
16 (12.6)
Semi-Intensive
190
25 (13.3)
Total
437
52 (11.9)