Table 1.

Information on factors related to the barn size, management, and bird numbers in the 20 flocks included in the study.

Flock	Barn size (m)		No. of birds	Stocking density (birds/m2)	Sick pen	Maximum light (lux)	Minimum light (lux)	Dusk (yes/no)	Litter quality	Water-to-feed ratio	Age at transect (d)
	Length	Width
1	69	18	3,050	6.14	Yes	-	-	Y	-	1.55	82
2	75	22	4,629	7.01	No	-	-	N	2	1.8	78
3	36	17	1,470	6	Yes	22	1	N	2	-	76
4	85	27.5	5,150	5.51	Yes	12	10	Y	1	-	77
5	60	22	3,200	6.2	No	8	5	N	3	1.6	78
6	101	18	7,200	9.9	No	6	4	Y	3	1.6	79
7	59	20	2,590	5.49	No	5	1	Y	4	1.7	75
8	108	44	5,400	4.5	Yes	6	4	Y	3	1.7	76
9	50	18	1,350	3.75	No	3	1	Y	2	1.4	80
10	69	18	3,100	6.24	No	2	0	N	4	1.67	80
11	70	18	2,880	5.71	Yes	2	0	Y	2	1.71	77
12	50	18	2,357	6.55	Yes	3	1	N	3	1.4	80
13	75	16	2,640	5.5	No	8	5	N	2	1.8	78
14	75	30	5,123	5.69	Yes	8	5	J	2	1.6	76
15	38.5	13	1,300	6.5	No	12	3	N	2	1.8	83
16	87.5	16	4,050	7.23	No	8	2	Y	3	1.45	76
17	69	18	2,893	5.82	Yes	-	-	Y	2	1.6	83
18	36	17	1,470	6	No	8	2	N	2	1.7	83
19	75	22	4,650	7.38	No	10	3	Y	2	2	82
20	60	22	3,200	6.06	No	6	3	Y	2	1.7	80