Supplementation of vitamin E or a botanical extract as antioxidants to improve growth performance and health of growing pigs housed under thermoneutral or heat-stressed conditions

Table 1 Composition of the experimental diets (as-fed basis)^a

^aDiets were formulated to meet or exceed NRC (2012) [31] recommendations for 41 to 75 kg pigs. Dietary treatments consisted of control diets (CON), vitamin E supplementation in water (VEW) as D-α-tocopherol (Emcelle tocopherol, Stuart Products, Bedford, TX, USA), vitamin E supplementation in feed (VEF) as DL-α-tocopheryl acetate (Rovimix, DSM, Heerlen, The Netherlands), and a botanical extract containing various polyphenols (Promote, AOX 50, Cargill/Provimi, Minneapolis, MN, USA) in feed (POL)
^bSupplied per kg of complete diet: 33 mg/kg of manganese, 110 mg/kg of zinc, 110 mg/kg of iron, 17 mg/kg of copper, 0.30 mg/kg of iodine, and 0.30 mg/kg of selenium
^cSupplied per kg of complete diet: 6,614 IU of vitamin A, 1,323 IU of vitamin D₃, 27 IU of vitamin E and 2.7 mg of vitamin K, 35 μg vitamin B₁₂, 6.2 mg riboflavin, 20 mg pantothenic acid, 35 mg niacin, and 0.09 mg biotin
^dSID Standardized ileal digestible
^eAnalyzed by Agricultural Experiment Station Chemical Laboratories, University of Missouri, Columbia, MO, USA

ISSN: 2049-1891