Table 3.

Average initial and final body weight of broilers kept on 2 different flooring systems of 4 different fattening periods (repetitions).

Fattening period	Floor type	Day	n	Mean	SD	95%-CI
Summer	Littered	0	N/A	N/A	N/A	N/A
	Part. perforated		N/A	N/A	N/A	N/A
Fall	Littered	0	50	41.42	3.59	[40.40];[42.44]
	Part. perforated		50	39.66	2.41	[38.97];[40.35]
Winter	Littered	0	50	43.82	3.35	[42.87];[44.77]
	Part. perforated		50	41.86	3.02	[41.00];[42.72]
Spring	Littered	0	50	41.86	2.94	[41.03];[42.69]
	Part. perforated		50	42.06	2.83	[41.26];[42.87]
Summer	Littered	31	20	2,007.35	253.10	[1,888.90];[2,125.81]
	Part. perforated		20	1,904.20	227.72	[1,797.62];[2,010.78]
Fall	Littered	32	20	2,058.05	184.23	[1,971.83];[2,144.27]
	Part. perforated		20	2,117.60	235.27	[2,007.49];[2,227.71]
Winter	Littered	32	20	2,101.55	208.83	[2,003.81];[2,199.29]
	Part. Perforated		20	2,134.85	236.70	[2,024.07];[2,245.63]
Spring	Littered	32	20	1,930.40	244.26	[1,816.09];[2,044.72]
	Part. Perforated		20	1,963.75	241.77	[1,850.60];[2,076.90]

The table contains the number of animals (n), mean values (mean), standard deviations of mean values (SD), and 95% confidence intervals (95% CI).

N/A, not available, the data were not collected during the summer fattening period.