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. 2023 Sep 9;15:350–363. doi: 10.1016/j.aninu.2023.07.007

Fig. 2.

Fig. 2

Fig. 2

Tocopherol balance in rumen (A), small intestine (B), feed-ileum (C), total tract (D), and hindgut (E). Total α-tocopherol originates from feedstuffs and vitamin supplement. Natural α-tocopherol originates from feedstuffs. Synthetic α-tocopherol originates from vitamin supplements. RRR-α-tocopherol (2R-(4′R, 8′R)-5,7,8-trimethyltocol) originates from feedstuffs and vitamin supplement. Synthetic 2R-α-tocopherol is summation of RRS (2R-(4′R, 8′S)-5,7,8-trimethyltocol), RSR (2R-(4′S, 8′R)-5,7,8-trimethyltocol), and RSS-α-tocopherol (2R-(4′S, 8′S)-5,7,8-trimethyltocol). 2S-α-tocopherol is summation of SRR (2S-(4′R, 8′R)-5,7,8-trimethyltocol), SSR (2S-(4′S, 8′R)-5,7,8-trimethyltocol), SRS (2S-(4′R, 8′S)-5,7,8-trimethyltocol), and SSS-α-tocopherol (2S-(4′S, 8′S)-5,7,8-trimethyltocol). α-Tocotrienol and γ-tocopherol are 2R-(4′R, 8′R)-5,7,8-trimethyltocotrienol and 2R-(4′R, 8′R)-,7,8-dimethyltocol, respectively. P-values show that average across treatments is different from zero. Error bars represent the standard error of means. Negative values represent the ruminal or hindgut formation.