Table 3.

Comparison of mean β-carotene vitamin content in fresh beef from grass-fed and grain-fed cattle.

	β-carotene
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*

* Indicates a significant difference (at least P < 0.05) between feeding regimens was reported within each respective study.