Table 3 Coliform counts (CC) in samples from meat packing plants

Sample		Mean±SE	p-value^a
Month	January	-	<0.001
	February	-
	March	-
	April	0.27±0.72^F
	May	0.30±0.86^E
	June	-
	July	1.00±1.26^C
	August	1.14±1.49^A
	September	0.43±1.05^D
	October	1.07±1.25^B
	November	-
	December	-
Season	Spring	0.24±0.72^C	<0.001
	Summer	0.82±1.27^A
	Autumn	0.45±0.96^B
	Winter	-
Animal	Beef	0.31±0.82^C	0.544
	Pork	0.44±1.01^B
	Chicken	0.55±1.05^A
Product form	Raw material	0.14±0.62^B	0.066
Product form	Finished products	0.46±0.99^A	0.066

Results are shown as mean±SE. Means with different letters indicate a statistically significant difference (p<0.05) by Duncan’s multiple range test. p-values were calculated by ANOVA (unit: Log CFU/g).
^a Indicates that p-value for trend <0.05. Logarithmic transformations were used for CCs.
^A-F Means with different superscripts in the same column are significantly different (p<0.05).