Effects of magnesium on the performance of sows and their piglets

Table 1 Ingredient composition and chemical analysis of the gestation and lactation diets fed to gilts and sows (as-fed basis)

Item	Gestation	Lactation
Ingredients, %
Corn	62.94	60.38
Soybean meal	16.78	20.10
Extruded soybean	-	14.00
Glucose	-	1.50
Wheat bran	16.27	-
Dicalcium phosphate	2.05	1.96
Limestone	1.24	1.21
Sodium chloride	0.32	0.45
Vitamin mix¹	0.04	0.04
Mineral mix²	0.20	0.20
Choline chloride (50%)	0.16	0.16
Analyzed nutrient levels, %
Dry matter	88.00	88.00
Crude protein	16.60	17.10
Crude fiber	4.90	5.39
Calcium	1.14	1.23
Total phosphorus	0.59	0.60
Magnesium	0.21	0.21
Calculated nutrient levels
Metabolizable energy, kcal/kg	3,263	3,270
Lysine, %	0.56	0.98
Methionine + cystine, %	0.37	0.45
Threonine, %	0.46	0.60
Tryptophan, %	0.11	0.18

¹Supplied per kilogram of complete diet: vitamin A, 4,000 IU; vitamin D₃,1,000 IU; vitamin E, 75 IU; vitamin K₃, 0.86 mg; riboflavin, 6.0 mg; pantothenic acid, 15.0 mg; niacin, 30 mg; cobalamin, 0.025 mg; biotin, 0.2 mg; folic acid, 0.6 mg; thiamine, 5.0 mg; pyridoxine, 6 mg.
²Supplied per kilogram of complete diet: iron, 45.0 mg; zinc, 35.0 mg; manganese, 10.0 mg; iodine, 0.2 mg; copper, 6.0 mg; selenium, 0.17 mg.

ISSN: 2049-1891