Table 3.

Urea, total protein (TP), albumin, and creatinine serum levels of goat kids fed diets containing crude glycerin.

Variable/h		Crude glycerin inclusion level (%)				SEM1	p value*
		0	5	10	15		L2	Q3
Urea (mg/dL)	0 h	74.85	79.15	73.43	82.55	2.2712	0.3242	0.5393
	4 h	65.87	76.55	72.81	79.28	1.6554	0.4088	0.6274
TP (g/dL)	0 h	6.33	6.61	6.04	6.74	0.1131	0.4114	0.3989
	4 h	6.67	6.83	6.24	6.67	0.1120	0.1217	0.9665
Albumin (g/dL)	0 h	2.50	2.51	2.33	2.47	0.0385	0.8107	0.6808
	4 h	2.58	2.60	2.44	2.46	0.0377	0.8611	0.4933
Creatinine (mg/dL)	0 h	0.38	0.41	0.37	0.37	0.0181	0.4744	0.3057
	4 h	0.35	0.42	0.37	0.38	0.0194	0.4880	0.4893

¹SEM, Standard error of the mean. ²Significance for linear effect. ³Significance for quadratic effect. 0 h = before morning feeding. 4 h = 4 h after morning feeding. mg/dL = milligrams per deciliter. g/dL = grams per deciliter. p value * = significant probability at the 5% level.