Table 4
Serum concentrations of metabolites and thyroid hormone in lactating sows fed control diet or CLA diet, and serum and milk IgG concentrations of sows and their progeny

	Sow diets		SED³	p-value
	CON¹	CLA²	SED³	p-value
Sow serum characteristics
Glucose, mg/dL	72.42	76.73	5.46	0.4586
Total protein, g/dL	7.19	7.11	0.17	0.6358
Total lipid, mg/dL	225.50	191.50	24.13	0.2085
Triacylglycerol, mg/dL	19.33	21.36	3.07	0.5151
NEFA, μEq/L	306.50	170.44	64.77	0.0484
Total cholesterol, mg/dL	97.50	99.91	6.58	0.7180
LDL-cholesterol, mg/dL	50.33	49.40	4.08	0.8213
HDL-cholesterol, mg/dL	49.75	47.46	4.47	0.6130
HDL/Total cholesterol	0.51	0.49	0.04	0.6007
LDL/HDL cholesterol	1.03	1.08	0.16	0.7708
Urea nitrogen, mg/dL	13.49	11.60	0.66	0.0134
Thyroxine (T4), μg/dL	2.88	3.01	0.18	0.4661
Triiodothyronine (T3), ng/mL	0.61	0.67	0.05	0.1729
T3:T4, %	2.15	2.24	0.16	0.5722
IgG, mg/dL
Sow serum	596.42	889.33	41.54	<0.0001
Milk	42.16	52.06	4.11	0.0468
Piglet serum	187.78	253.88	26.48	0.0189