Turkeys and chickens reared to 5-weeks of age and fed diets with feedstuffs low in endogenous tocopherols were examined. Treatments included feed supplemented with RRR (natural source vitamin E) alpha tocopheryl acetate (AcT, 35 mg/kg feed) and all-racemic (synthetic vitamin E) AcT (10 and 58 mg/kg feed). AcT ingestion per kg body weight was statistically similar between chicken and turkey only when the RRR-AcT containing diet was fed. Metabolites of alpha tocopherol (AT) and gamma tocopherol (GT) were measured in bile. When fed the RRR AcT diet, AT- and GT-metabolites were 8.3 and 5.3-fold elevated in turkey compared to chicken, respectively (p
Revised: March 17, 2016 |
Published: January 27, 2016
Citation
Perez D.M., M.E. Richards, R. Parker, M.E. Berres, A.T. Wright, M. Sifri, and N.C. Sadler, et al. 2016.Role of cytochrome P450 hydroxylase in the decreased accumulation of vitamin E in muscle from turkeys compared to that from chickens.Journal of Agricultural and Food Chemistry 64, no. 3:671-680.PNNL-SA-108079.doi:10.1021/acs.jafc.5b05433