Compared to RP, SβC1X did not
impact performance (P ≥ 0.25) or plasma concentrations of retinoids or carotenoids (P ≥ 0.26). Increasing
dietary βC increased (P ≤ 0.04) plasma concentrations of RP and all of the isomers of βC, but did not affect
weight, gain, or gain:feed (P ≥ 0.24). Marbling and fat thickness did not differ between RP and SβC1X or
because of amount of βC (P ≥ 0.35).