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Table 4 Comparison of mean α-tocopherol vitamin content in fresh beef from grass-fed and grain-fed cattle.

From: A review of fatty acid profiles and antioxidant content in grass-fed and grain-fed beef

Author, year, animal class Grass-fed (ug/g tissue) Grain-fed (ug/g tissue)
De la Fuente et al., 2009, Mixed cattle 4.07* 0.75*
Descalzo, et al., 2008, Crossbred steers 3.08* 1.50*
Insani et al., 2007, Crossbred steers 2.1* 0.8*
Descalzo, et al., 2005, Crosbred steers 4.6* 2.2*
Realini et al., 2004, Hereford steers 3.91* 2.92*
Yang et al., 2002, Crossbred steers 4.5* 1.8*
  1. * Indicates a significant difference (at least P < 0.05) between feeding regimens was reported within each respective study.