Publication Date
1993
Description
The effect of condensed tannins (CT) on the digestion and metabolism of methionine and cystine was studied in sheep housed indoors and fed Lotus pedunculatus hourly. The PBO sheep (no CT) lost 30% of ingested methionine and cystine across the rumen, whereas the control sheep (CT acting normally) lost no methionine and cystine across the rumen. The apparent absorption of methionine from the small intestine was 27% higher in control than PBO sheep, but both groups had a similar apparent absorption of cystine from the small intestine. CT had no effect upon plasma methionine irreversible loss rate (IRL), but markedly increased the IRL of cystine (39.8 and 22.4 µmoUmin) in control compared to PEG sheep, A three-pool model was constructed to illustrate! the interconversions between plasma methionine, cysline and inorganic sulfate.
Citation
McNabb, W C.; Waghorn, G C.; Barry, T N.; and Shelton, I D., "Effect of Condensed-Tannins in Lotus pedunculatus on the Digestion and Plasma Metabolism of Methionine and Cystine in Sheep" (2024). IGC Proceedings (1993-2023). 17.
https://uknowledge.uky.edu/igc/1993/session15/17
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Effect of Condensed-Tannins in Lotus pedunculatus on the Digestion and Plasma Metabolism of Methionine and Cystine in Sheep
The effect of condensed tannins (CT) on the digestion and metabolism of methionine and cystine was studied in sheep housed indoors and fed Lotus pedunculatus hourly. The PBO sheep (no CT) lost 30% of ingested methionine and cystine across the rumen, whereas the control sheep (CT acting normally) lost no methionine and cystine across the rumen. The apparent absorption of methionine from the small intestine was 27% higher in control than PBO sheep, but both groups had a similar apparent absorption of cystine from the small intestine. CT had no effect upon plasma methionine irreversible loss rate (IRL), but markedly increased the IRL of cystine (39.8 and 22.4 µmoUmin) in control compared to PEG sheep, A three-pool model was constructed to illustrate! the interconversions between plasma methionine, cysline and inorganic sulfate.
