Figure 3. Relationship between δ¹³C labeled n-alkanes and chromium mordanted fiber or δ¹³C labeled dry matter.

n-Alkanes: C₂₉ (□), C₃₁ (○), C₃₃ (Δ). Pearson correlation coefficients shown in plots. K ₁ = fractional rumen passage rate (%/h); TMRT = total mean retention time (h). Mean K ₁ is (mean ± SEM) 3.38±0.315%/h for δ¹³C labeled dry matter and 5.25±0.490%/h for chromium mordanted fiber; mean TMRT is 47.1±2.52 h for δ¹³C labeled dry matter and 35.7±1.91 h for chromium mordanted fiber.