Table 6.

Effects of different levels of dietary crude protein on blood profiles in weaning pigs¹⁾

Criteria	Treatment2)						SEM	p-value3)
	CP16	CP17	CP18	CP19	CP20	CP21		L	Q
BUN (mg/dL)
Initial	-------------------------------------------------------- 5.67 --------------------------------------------------------
3 wk	2.60	4.60	6.20	7.80	8.40	10.6	0.589	<0.01	0.72
6 wk	3.20	6.40	5.00	6.80	9.80	9.00	0.510	<0.01	0.74
Creatinine (mg/dL)
Initial	-------------------------------------------------------- 0.94 --------------------------------------------------------
3 wk	0.74	0.71	0.69	0.77	0.62	0.72	0.023	0.55	0.82
6 wk	0.93	0.96	1.05	0.91	0.9	0.87	0.024	0.21	0.18
Glucose (mg/dL)
Initial	-------------------------------------------------------- 107.50 ------------------------------------------------------
3 wk	89.83	96.40	90.80	89.40	81.20	91.40	2.056	0.23	0.32
6 wk	97.40	78.20	92.80	81.80	86.80	80.60	2.748	0.22	0.66
Total protein (mg/dL)
Initial	-------------------------------------------------------- 5.00 --------------------------------------------------------
3 wk	4.64	4.46	4.76	4.42	4.88	4.60	0.090	0.72	0.92
6 wk	5.22	5.36	4.86	4.88	5.44	5.38	0.097	0.59	0.14
Triglycerides (mg/dL)
Initial	-------------------------------------------------------- 39.50 --------------------------------------------------------
3 wk	40.60	30.80	45.80	48.60	45.80	40.80	2.740	0.40	0.46
6 wk	41.40	66.00	35.20	53.80	55.00	59.40	2.682	0.08	0.56
IGF-1 (ng/mL)
Initial	-------------------------------------------------------- 10.48 --------------------------------------------------------
3 wk	11.57	9.85	11.64	10.72	12.39	12.59	0.839	0.60	0.72
6 wk	7.08	8.40	8.53	7.27	9.78	7.84	0.415	0.57	0.60

SEM, standard error of the mean; BUN, blood urea nitrogen; IGF-1, insulin-like growth factor.

¹⁾Least squares means of twelve observations per treatment.

²⁾CP16, corn-SBM-based diet (early weaning CP 16%/late weaning CP 15%); CP17, corn-SBM-based diet (early weaning CP 17%/late weaning CP 16%); CP18, corn-SBM-based diet (early weaning CP 18%/late weaning CP 17%); CP19, corn-SBM-based diet (early weaning CP 19%/late weaning CP 18%); CP20, corn-SBM-based diet (early weaning CP 20%/late weaning CP 19%); CP21, corn-SBM-based diet (early weaning CP 21%/late weaning CP 20%).

³⁾L, linear; Q, quadratic.