Table 5.

Effect of CP levels in gestation diets on blood profiles of primiparous sows and their progeny in lactation¹

Item	Protein level in gestation (%)				SEM2	p-value
	11.44	12.93	15.04	17.13		Linear	Quadratic
Sows
Plasma urea nitrogen (g/dL)3,5
24 h postpartum	8.8	11.7	13.8	14.6	0.96	0.001	0.294
21 d of lactation	15.8	15.8	15.9	14.4	0.97	0.095	0.783
Plasma free fatty acids (μEq/L)
24 h postpartum	333.5	187.6	127.0	229.6	60.21	0.254	0.068
21 d of lactation	164.6	335.8	200.8	163.5	68.30	0.625	0.194
Plasma glucose (mg/dL)3
24 h postpartum	97.8	89.0	99.0	92.2	6.04	0.804	0.871
21 d of lactation	83.6	87.6	85.0	79.2	2.78	0.222	0.097
Nursing pigs
Plasma urea nitrogen (g/dL)3
At birth	16.4	19.1	14.5	19.1	2.32	0.724	0.684
21 d of lactation	10.2	7.9	7.6	9.7	1.65	0.833	0.206
Plasma glucose (mg/dL)4
At birth	97.6	98.0	92.0	96.0	13.13	0.856	0.893
21 d of lactation	116.8	118.6	105.8	115.0	4.77	0.407	0.450

¹Least squares means of 5 observations per treatment.

²Standard error of mean.

³Day effect (p<0.01; repeated measures ANOVA).

⁴Day effect (p<0.05; repeated measures ANOVA).

⁵Day×treatment interaction (p<0.01; repeated measures ANOVA).