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Table 3 Comparison of mean β-carotene 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)
Insani et al., 2007, Crossbred steers 0.74* 0.17*
Descalzo et al., 2005 Crossbred steers 0.45* 0.06*
Yang et al., 2002, Crossbred steers 0.16* 0.01*
  1. * Indicates a significant difference (at least P < 0.05) between feeding regimens was reported within each respective study.