Effects of dietary ratio of n-6 to n-3 polyunsaturated fatty acids on immunoglobulins, cytokines, fatty acid composition, and performance of lactating sows and suckling piglets

Table 1 Ingredient and chemical composition of experimental diets

Ingredient (% as fed)	Dietary n-6:n-3 PUFA ratio
	3:1	9:1	13:1
Corn	58.75	58.75	58.75
Soybean meal (45% CP)	27.25	27.25	27.25
Wheat bran	4.00	4.00	4.00
Fish meal (60% CP)	2.00	2.00	2.00
Limestone	1.64	1.64	1.64
Oil mixture^a	4.00	4.00	4.00
Salt	0.60	0.60	0.60
Dicalcium phosphate	0.84	0.84	0.84
L-lysine (65%)	0.12	0.12	0.12
Vitamin and mineral premix^b	0.80	0.80	0.80
Analyzed chemical composition (% as fed)
Dry matter	89.26	90.60	89.35
Crude protein	18.13	18.31	18.31
Lysine	0.96	0.92	1.08
Calcium	1.02	0.98	0.95
Phosphorus	0.58	0.57	0.56

^aOil was a mixture of different combinations of corn and linseed oil. 3.2% linseed oil and 0.8% corn oil in 3:1 treatment, 1.4% linseed oil and 2.6 corn oil in 9:1 treatment, 0.8% linseed oil and 3.2% corn oil in 13:1 treatment.
^bComposition per kilogram of diet:Vitamin A, 12,000 IU; Vitamin D₃, 2,000 IU; Vitamin E, 24 IU; Vitamin K₃, 2.0 mg; Vitamin B₁, 2.0 mg; Vitamin B₂, 60 mg; Vitamin B₆, 4.0 mg; Vitamin B₁₂, 24 μg; niacin, 30 mg; pantothenic acid, 20 mg; folic acid, 3.6 mg; biotin, 0.40 mg; choline, 400 mg; Fe, 96 mg; Cu, 8.0 mg; Zn, 120 mg; Mn, 40 mg; I, 0.56 mg; Se, 0.40 mg; phytase, 120 mg.

ISSN: 2049-1891