Muscle concentrations of carotenoids and VA metabolites are presented in Table 8. Synthetic βC 1X did not affect LM concentrations of carotenoids or retinoids compared to RP (P≥ 0.14). Longissimusmuscle all-trans βC concentrations responded quadratically (P b 0.01) to increasing concentrations of SβC in the diet, increasing 309% from SβC1X to SβC5X and not increasing fromSβC5X to SβC10X. Longissimus muscle 9-cis-βC (P b 0.01) concentration increased linearly in response
to increasing SβC supplementation. Although concentrations of β-cryptoxanthin, retinol, and retinyl palmitate in the LM seem to be greater in SβC1X compared to RP, β-cryptoxanthin concentration in