Table 3. Effects of the flattening rate on sows behavior

	Sow behavior in the ratio of the flat floor
	0%	20%	30%	40%	50%	F-value	p-value
Standing	39.64a	26.82b	20.53c	19.11d	27.84b	2.451	0.001
Lying	60.36d	73.95c	82.01b	89.89a	88.97a	2.451	0.001
Lying to slat cover	-	12.43c	17.96c	38.89b	56.58a	2.653	0.001
Fighting	0.03b	0.01a	0.00a	0.00a	0.00a	2.451	0.001
Chewing	0.03b	0.03b	0.05b	0.06ab	0.14a	2.451	0.016
Scratching	0.10	0.00	0.92	0.00	0.00	2.451	0.074
Grouping	2.28	1.13	19.96	1.26	0.06	2.451	0.062

Means with different superscripts in the same column differ significantly (p < 0.05).