Effects of Dietary Supplementation of Oregano Essential Oil to Sows on Oxidative Stress Status, Lactation Feed Intake of Sows, and Piglet Performance

Table 4

Effects of dietary supplementation of oregano essential oils to sows in gestation and lactation on the colostrum and milk composition and IgG and IgM concentrations in colostrum and serum of sows.

Item	C^1	OEO^1	SEM	value
Number of sows	5	5
Colostrum^2
Fat (%)	5.78	4.60	0.36	0.14
Lactose (%)	1.98	2.01	0.07	0.84
Protein (%)	15.02	15.88	0.60	0.51
Solid not fat (%)	20.50	21.34	0.53	0.47
Total solids (%)	27.10	26.58	0.73	0.75
IgG (mg/mL)	15.80	15.79	0.46	0.91
IgM (mg/mL)	2.86	2.85	0.14	0.97
Milk (%),^3 d 18 of lactation
Fat	8.71	8.10	0.56	0.61
Lactose	4.84	4.79	0.12	0.85
Protein	4.56	4.60	0.06	0.77
Solid not fat	13.60	13.59	0.11	0.97
Total solids	22.18	21.64	0.40	0.53
Serum, d 109 of gestation
IgG (mg/mL)	8.90	7.82	0.46	0.27
IgM (mg/mL)	2.69	2.82	0.15	0.69

SEM, standard error of means.
Dietary treatments: C = control diet; OEO = 15 mg/kg oregano essential oils diet.
Colostrum was collected within 4 h after the initiation of farrowing.
Sows were injected with 10 IU of oxytocin intramuscularly behind the ear to induce milk ejection.