Table 3. i).

The correlation between four different floor space allowances (VL, L, M, H) and pig productivity index

Dependent variables	Season	Independent variables (m2/head)	R2	B	B	t	p1
NPD (Pregnant sow)	Summer	VL (0.90 to 2.50)	0.142	−9.653	−0.377	−0.999	0.357
		L (2.53 to 3.00)	0.648	63.893	0.805	3.324	0.016
		M (3.10 to 3.67)	0.163	−11.418	−0.404	−1.081	0.321
		H (3.70 to 9.00)	0.421	3.818	0.649	2.088	0.082
	Winter	VL (0.90 to 2.50)	0.165	−11.320	−0.407	−1.091	0.318
		L (2.53 to 3.00)	0.428	45.689	0.654	2.120	0.078
		M (3.10 to 3.67)	0.218	−23.306	−0.467	−1.293	0.244
		H (3.70 to 9.00)	0.058	1.250	0.241	0.609	0.565
NOW (Farrowing pig)	Summer	VL (2.30 to 6.40)	0.255	0.813	0.505	1.548	0.166
		L (6.60 to 7.61)	0.075	−1.191	−0.274	−0.753	0.476
		M (7.92 to 8.82)	0.002	0.177	0.045	0.119	0.908
		H (9.13 to 12.50)	0.103	−0.163	−0.321	−0.895	0.400
	Winter	VL (2.30 to 6.40)	0.300	0.850	0.548	1.732	0.127
		L (6.60 to 7.61)	0.189	−2.192	−0.435	−1.277	0.242
		M (7.92 to 8.82)	0.001	−0.125	−0.023	−0.060	0.954
		H (9.13 to 12.50)	0.086	0.010	0.294	0.813	0.443
SR (Farrowing pig)	Summer	VL (2.30 to 6.40)	0.340	1.436	0.583	1.898	0.100
		L (6.60 to 7.92)	0.121	−1.671	−0.348	−0.981	0.359
		M (8.00 to 9.13)	0.002	0.452	0.048	0.127	0.902
		H (10.30 to 14.40)	0.578	−3.444	−0.760	−3.094	0.017
	Winter	VL (2.30 to 6.40)	0.240	1.667	0.490	1.487	0.181
		L (6.60 to 7.92)	0.046	−1.506	−0.215	−0.583	0.578
		M (8.00 to 9.13)	0.077	−1.628	−0.277	−0.764	0.470
		H (10.30 to 14.40)	0.335	−2.504	−0.579	−1.879	0.102

FSA, floor space allowance; VL, very low FSA; L, low FSA; M, medium FSA; H, high FSA; B, unstandardized coefficients; t, t-value; NPD, non-productive sow days; NOW, number of weaners; SR, survival rate; ARA, appearance rate of A-grade pork; d-SW, days at a slaughter weight of 110 kg.

¹The p value for the independent variable (p<0.05).