Table 4

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

α-tocopherol

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*

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

Daley et al. Nutrition Journal 2010 9:10   doi:10.1186/1475-2891-9-10