Table 6.

Effects of feeding sows diets supplemented with lysozyme on serum immunoglobulin and cytokines of sows and piglets¹

	Treatment
Item	Control	LZM 150	LZM 300	SEM	P-value
Sows2
Day 1 of lactation
IgA (mg/mL)	3.85	4.21	4.23	0.08	0.06
IgG (mg/mL)	0.64	0.86	0.87	0.04	0.05
IgM (mg/mL)	0.81b	1.01a	0.98a	0.03	<0.01
IL-6 (ng/L)	58.41	56.48	56.08	2.06	0.90
IL-10 (ng/L)	250.78	280.4	274.06	5.82	0.08
TNF-α (ng/L)	122.68	119.54	121.1	2.26	0.86
Day 7 of lactation
IgA (mg/mL)	4.31b	4.72a	4.70a	0.07	0.01
IgG (mg/mL)	0.60	0.69	0.72	0.02	0.08
IgM (mg/mL)	0.89	0.89	0.93	0.02	0.09
IL-6 (ng/L)	67.09	63.88	63.58	0.91	0.23
IL-10 (ng/L)	266.67b	287.36a	284.09a	3.50	0.02
TNF-α (ng/L)	123.38	119.54	121.65	3.6	0.98
Day 21 of lactation
IgA (mg/mL)	4.54	4.81	4.89	0.15	0.62
IgG (mg/mL)	0.60	0.65	0.66	0.02	0.57
IgM (mg/mL)	0.74b	0.85a	0.91a	0.02	0.05
IL-6 (ng/L)	72.91	70.70	71.17	1.24	0.76
IL-10 (ng/L)	235.84	251.11	250.36	3.89	0.20
TNF-α (ng/L)	107.76	108.13	106.69	1.98	0.95
Piglets3
Day 21 of lactation
IgA (mg/mL)	2.16b	2.62a	2.56a	0.07	0.01
IgG (mg/mL)	2.25b	2.77a	2.65a	0.08	<0.01
IgM (mg/mL)	23.98b	27.62a	28.87a	0.06	0.04
IL-6 (ng/L)	52.82	50.70	50.77	0.64	0.34
IL-10 (ng/L)	209.60b	256.59a	239.21a	6.96	0.01
TNF-α (ng/L)	54.42	51.79	51.59	1.32	0.66

¹LZM 150 = control diet + lysozyme 150 g/t, LZM 300 = control diet + lysozyme 300 g/t, IgA = immunoglobulin A, IgG = immunoglobulin G, IgM = immunoglobulin M, IL-6 = interleukin-6, IL-10 = interleukin-10, TNF-α = tumor necrosis factor-α.

²Data are means of 8 sows.

³Data are means of 8 piglets from 8 sows.

^a,bWithin a row, means with different superscripts are different (P < 0.05).