DOI: 10.1079/bjn19870015. The effect of condensed tannins on the site of digestion of amino acids and other nutrients in sheep fed on<i>Lotus corniculatus</i>L

The effect of condensed tannins on the site of digestion of amino acids and other nutrients in sheep fed onLotus corniculatusL

10.1079/bjn19870015

Crossref journal-article

Cambridge University Press (CUP)

British Journal of Nutrition (56)

Abstract

1. Sheep were used to evaluate the nutritional consequences of a low condensed-tannin concentration (22 g/kg dry matter (DM)) in lotus (Lotus corniculatusL.) (control group) compared with lotus given to sheep receiving intraruminal polyethylene glycol (PEG) infusion (PEG group). PEG selectively binds to tannins and prevents tannins from binding proteins.2. DM intakes (1430 (SE 28) g/d) and digestibility of energy (663 (SE 4.5) kJ/MJ intake) were similar for both groups but the apparent digestion of nitrogen was lower in the control sheep (0.70) than in the PEG sheep (0.78;P< 0.001).3. The proportion of N apparently digested before the abomasum (i.e. in the rumen) was lower (P< 0.05) in control sheep (0.12) than in PEG sheep (0.21;P< 0.05). Rumen ammonia concentrations were lower (P< 0.001) in control sheep than in PEG sheep. The proportion of neutral-detergent fibre (NDF) digested in the rumen was similar for both groups (0.48 (SE 0.012)) but less energy was digested in the rumen of the control (0.42) than of the PEG sheep (0.47;P< 0.05).4. The flux of essential amino acids (EAA) through the abomasum of control sheep was 50% greater than that in PEG sheep; flux of non-essential amino acids (NEAA) was 14% higher in control than in PEG sheep. Apparent digestibility of EAA in the small intestine was similar for both treatments (0.67), but NEAA were less well digested in the control (0.55) than in the PEG sheep (0.69).5. The presence of tannins in the control group increased net apparent absorption of threonine (57%), valine (89%), isoleucine (94%), leucine (30%), tyrosine (41%), phenylalanine (93%), histidine (90%) and lysine (59%), and reduced NEAA absorption by 10%, compared with PEG sheep.

Bibliography

Waghorn, G. C., Ulyatt, M. J., John, A., & Fisher, M. T. (1987). The effect of condensed tannins on the site of digestion of amino acids and other nutrients in sheep fed onLotus corniculatusL. British Journal of Nutrition, 57(1), 115â126.

Authors 4

G. C. Waghorn (first)
M. J. Ulyatt (additional)
A. John (additional)
M. T. Fisher (additional)

References 28 Referenced 281

10.1079/BJN19840054
10.1080/00288233.1983.10420952
10.1079/BJN19840054
10.1017/S0021859600059207
10.1017/S0021859600041447
{'key': 'S0007114587000163_ref008', 'first-page': '227', 'volume-title': 'Digestion and Metabolism in the Ruminant', 'author': 'Faichney', 'year': '1975'} / Digestion and Metabolism in the Ruminant by Faichney (1975)
10.1002/jsfa.2740280204
10.1002/jsfa.2740341004
{'key': 'S0007114587000163_ref001', 'first-page': '496', 'volume': '65', 'year': '1982', 'journal-title': 'Journal of the Association of Official Analytical Chemists'} / Journal of the Association of Official Analytical Chemists (1982)
{'key': 'S0007114587000163_ref020', 'first-page': '123', 'volume-title': 'Basic and Clinical Nutrition', 'volume': '3', 'author': 'Robertson', 'year': '1980'} / Basic and Clinical Nutrition by Robertson (1980)
{'key': 'S0007114587000163_ref025', 'first-page': '107', 'volume': '38', 'author': 'Ulyatt', 'year': '1977', 'journal-title': 'Proceedings of the New Zealand Grassland Association'} / Proceedings of the New Zealand Grassland Association by Ulyatt (1977)
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{'key': 'S0007114587000163_ref012', 'first-page': '556', 'volume-title': 'Review of Physiological Chemistry', 'author': 'Grodsky', 'year': '1979'} / Review of Physiological Chemistry by Grodsky (1979)
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{'key': 'S0007114587000163_ref019', 'first-page': '25', 'volume-title': 'Forage Protein in Ruminant Animal Production, Occasional Publication', 'author': 'Mangan', 'year': '1982'} / Forage Protein in Ruminant Animal Production, Occasional Publication by Mangan (1982)
{'key': 'S0007114587000163_ref023', 'first-page': '14A', 'volume': '30', 'author': 'Thomson', 'year': '1971', 'journal-title': 'Proceedings of the Nutrition Society'} / Proceedings of the Nutrition Society by Thomson (1971)
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{'key': 'S0007114587000163_ref010', 'author': 'Fisher', 'year': '1986', 'journal-title': 'Analyst'} / Analyst by Fisher (1986)
{'key': 'S0007114587000163_ref005', 'first-page': '470', 'volume': '82', 'author': 'Binnerts', 'year': '1968', 'journal-title': 'Veterinary Record'} / Veterinary Record by Binnerts (1968)
{'key': 'S0007114587000163_ref022', 'volume-title': 'Autounalyser II Method no. 270–73W', 'year': '1973'} / Autounalyser II Method no. 270–73W (1973)
10.1016/0020-708X(71)90004-4
Lee J. (1981). Technical Report no. 3. Palmerston North, New Zealand: Applied Biochemistry Division, DSIR.
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{'key': 'S0007114587000163_ref009', 'first-page': '28', 'volume-title': 'Symposium on Food Chemistry', 'author': 'Fisher', 'year': '1983'} / Symposium on Food Chemistry by Fisher (1983)
{'key': 'S0007114587000163_ref028', 'first-page': '119', 'volume-title': 'CSIRO Technical paper', 'author': 'Williams', 'year': '1967'} / CSIRO Technical paper by Williams (1967)

Dates

Type	When
Created	20 years, 3 months ago (May 19, 2005, 7:49 p.m.)
Deposited	4 years, 1 month ago (July 10, 2021, 10:48 p.m.)
Indexed	18 minutes ago (Sept. 6, 2025, 8:03 a.m.)
Issued	38 years, 8 months ago (Jan. 1, 1987)
Published	38 years, 8 months ago (Jan. 1, 1987)
Published Online	18 years, 5 months ago (March 9, 2007)
Published Print	38 years, 8 months ago (Jan. 1, 1987)

Funders 0

None

BibTeX

@article{Waghorn_1987, title={The effect of condensed tannins on the site of digestion of amino acids and other nutrients in sheep fed onLotus corniculatusL}, volume={57}, ISSN={1475-2662}, url={http://dx.doi.org/10.1079/bjn19870015}, DOI={10.1079/bjn19870015}, number={1}, journal={British Journal of Nutrition}, publisher={Cambridge University Press (CUP)}, author={Waghorn, G. C. and Ulyatt, M. J. and John, A. and Fisher, M. T.}, year={1987}, month=jan, pages={115–126} }

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