. 2014 Jan 21;93(2):441–447. doi: 10.3382/ps.2013-03401

Table 4.

Measurement of water activity (a_w) in the poultry feed, before being spiked with Salmonella enterica cultures, and after spiking at specific time points¹

Sample	a_w
Unspiked	0.35 ± 0.001^a
0 h	0.74 ± 0.001^b
4 h	0.70 ± 0.003^c
8 h	0.69 ± 0.003^d
24 h	0.67 ± 0.001^e
4 d	0.65 ± 0.002^f
7 d	0.61 ± 0.001^g

^a–gMean values within a column that do not have the same superscript letter are significantly different (P < 0.05).

¹Values of SEM ± from triplicates from each S. enterica strain.