Table 1.

Effect of maternal selenium intake during gestation on BW and P₂-BF of sows¹

	Treatment			Gestation stage					P-value
Item	Control	Na2SeO3	HMSeBA	Day 1	Day 30	Day 60	Day 90	Day 110	T	S	T × S
BW, kg	237.52 ± 6.67	236.91 ± 7.25	241.30 ± 6.67	222.69 ± 3.29d	225.06 ± 3.75d	235.05 ± 4.14c	245.17 ± 4.34b	264.90 ± 4.67a	0.886	<0.001	0.444
BF, mm	13.50 ± 0.10	13.41 ± 1.09	14.29 ± 0.10	13.80 ± 0.62	13.72 ± 0.61	13.48 ± 0.55	13.93 ± 0.64	13.73 ± 0.61	0.801	0.213	0.154

¹Data are shown as mean values with their standard errors. Sows were regarded as the experimental units, n = 13 for Control group at each gestation stage; n = 11 for Na₂SeO₃ group at each gestation stage; n = 13 for HMSeBA group at each gestation stage. When significant main effects or interactive effects were observed, the means were compared using the Tukey–Kramer method with a P < 0.05 indicating significance. Therefore, a-d within a row and within a main effect, mean values without a common letter are significantly different (P < 0.05). T, treatment; S, gestation stage, T × S, interaction between treatment and gestation stag; Control, basal diet; Na₂SeO₃, 0.3 mg/Kg Na₂SeO₃; HMSeBA, 0.3 mg/Kg HMSeBA.