The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep
A feeding trial with sheep was carried out at the Centro Internacional de Agricultura Tropical (CIAT) in Colombia to investigate the concept of using mixtures of sun-dried tropical shrub legumes to dilute tannin levels in the diet and improve nitrogen (N) utilisation by ruminants. Intake, digestibil...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
1995
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/44164 |
| _version_ | 1855523944386265088 |
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| author | Fassler, OM Lascano Aguilar, Carlos Eduardo |
| author_browse | Fassler, OM Lascano Aguilar, Carlos Eduardo |
| author_facet | Fassler, OM Lascano Aguilar, Carlos Eduardo |
| author_sort | Fassler, OM |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A feeding trial with sheep was carried out at the Centro Internacional de Agricultura Tropical (CIAT) in Colombia to investigate the concept of using mixtures of sun-dried tropical shrub legumes to dilute tannin levels in the diet and improve nitrogen (N) utilisation by ruminants. Intake, digestibility and N retention were measured with animals consuming: low quality grass (Brachiaria dictyoneura) alone; low quality grass supplemented with Cratylia argentea alone (49:51); and grass plus C. argentea with high tannin Flemingia macrophylla at 2 levels (53:37:10; 55:26:19). The 2 diets with F. macrophylla averaged 0.5 and 0.9% extractable condensed tannins. Intake and N retention were not significantly affected by legume supplementation, even though apparent N digestibility was higher when legumes were added. Urinary nitrogen was reduced as F. macrophylla increased in the legume mixture, suggesting less rumen ammonia losses due to protein protection by condensed tannins. However, with more F. macrophylla in the mixture, there was a reduction in dry matter and fibre digestion and an increase in faecal N and faecal N-ADF. These results suggest that, in formulating legume mixtures to supplement low quality forages, it is important to consider not only tannin levels but also the digestibility of the legumes used. |
| format | Journal Article |
| id | CGSpace44164 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1995 |
| publishDateRange | 1995 |
| publishDateSort | 1995 |
| record_format | dspace |
| spelling | CGSpace441642025-11-12T05:55:11Z The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep Fassler, OM Lascano Aguilar, Carlos Eduardo animal feeding feed crops feed legumes cratylia maughania insolation brachiaria dictyoneura digestibility nitrogen metabolism sheep leguminosas forrajeras insolación alimentación de los animales digestibilidad metabolismo del nitrógeno ovinos A feeding trial with sheep was carried out at the Centro Internacional de Agricultura Tropical (CIAT) in Colombia to investigate the concept of using mixtures of sun-dried tropical shrub legumes to dilute tannin levels in the diet and improve nitrogen (N) utilisation by ruminants. Intake, digestibility and N retention were measured with animals consuming: low quality grass (Brachiaria dictyoneura) alone; low quality grass supplemented with Cratylia argentea alone (49:51); and grass plus C. argentea with high tannin Flemingia macrophylla at 2 levels (53:37:10; 55:26:19). The 2 diets with F. macrophylla averaged 0.5 and 0.9% extractable condensed tannins. Intake and N retention were not significantly affected by legume supplementation, even though apparent N digestibility was higher when legumes were added. Urinary nitrogen was reduced as F. macrophylla increased in the legume mixture, suggesting less rumen ammonia losses due to protein protection by condensed tannins. However, with more F. macrophylla in the mixture, there was a reduction in dry matter and fibre digestion and an increase in faecal N and faecal N-ADF. These results suggest that, in formulating legume mixtures to supplement low quality forages, it is important to consider not only tannin levels but also the digestibility of the legumes used. 1995 2014-10-02T08:33:21Z 2014-10-02T08:33:21Z Journal Article https://hdl.handle.net/10568/44164 en Open Access application/pdf |
| spellingShingle | animal feeding feed crops feed legumes cratylia maughania insolation brachiaria dictyoneura digestibility nitrogen metabolism sheep leguminosas forrajeras insolación alimentación de los animales digestibilidad metabolismo del nitrógeno ovinos Fassler, OM Lascano Aguilar, Carlos Eduardo The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep |
| title | The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep |
| title_full | The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep |
| title_fullStr | The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep |
| title_full_unstemmed | The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep |
| title_short | The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep |
| title_sort | effect of mixtures of sun dried tropical shrub legumes on intake and nitrogen balance by sheep |
| topic | animal feeding feed crops feed legumes cratylia maughania insolation brachiaria dictyoneura digestibility nitrogen metabolism sheep leguminosas forrajeras insolación alimentación de los animales digestibilidad metabolismo del nitrógeno ovinos |
| url | https://hdl.handle.net/10568/44164 |
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