Intake, digestibility and nitrogen utilization by sheep fed with provenances of Calliandra calothyrsus Meissner with different tannin structure
A trial with sheep (housed in metabolic cages, and fitted with ruminal and duodenal cannulas) fed sun-dried forage of two Calliandra calothyrsus provenances (San Ramon —CIAT 22310 and Patulul CIAT— 22316) harvested in sites with contrasting soil fertility was carried out to further define the biolog...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
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2003
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| Online Access: | https://hdl.handle.net/10568/43594 |
| _version_ | 1855524538207436800 |
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| author | Lascano Aguilar, Carlos Eduardo Ávila Vargas, P. Stewart, J |
| author_browse | Lascano Aguilar, Carlos Eduardo Stewart, J Ávila Vargas, P. |
| author_facet | Lascano Aguilar, Carlos Eduardo Ávila Vargas, P. Stewart, J |
| author_sort | Lascano Aguilar, Carlos Eduardo |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A trial with sheep (housed in metabolic cages, and fitted with ruminal and duodenal cannulas) fed sun-dried forage of two Calliandra calothyrsus provenances (San Ramon —CIAT 22310 and Patulul CIAT— 22316) harvested in sites with contrasting soil fertility was carried out to further define the biological significance of the different chemical structure in the tannin of Calliandra provenances. Six African-type sheep were assigned to one of four treatments (T1: San Ramón grown in Quilichao with infertile soils, T2: Patulul grown in Quilichao with infertile soils, T3: San Ramón grown in Palmira with fertile soils, and T4: Patulul grown in Palmira with fertile soils) arranged in an Unbalanced Simple Crossover Design. Results showed that extractable tannins in Patulul comprised mainly procyanidin subunits, whereas the tannin fraction in San Ramón was composed largely of prodelphinidin subunits. The DM intake and digestibility of Calliandra were greater (P<0.05) with San Ramón than with Patulul. Intake was also greater (P<0.05) with provenances harvested in the site with fertile soil than in the site with acid soils. Absolute and relative values of ruminal escape dietary N in sheep were greater (P<0.05) with San Ramón than with Patulul, which is consistent with laboratory results on tannin astringency. Thus for the first time we have evidence suggesting that the chemical structure of condensed tannins in tropical legumes can have an effect on N utilization by ruminants. The fact that in vivo results on ruminal escape N were in close agreement with results on astringency of extractable condensed tannins from Calliandra provenances validates the use of laboratory astringency tests for screening tropical legumes with tannins for quality traits. |
| format | Journal Article |
| id | CGSpace43594 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2003 |
| publishDateRange | 2003 |
| publishDateSort | 2003 |
| record_format | dspace |
| spelling | CGSpace435942025-05-15T09:40:26Z Intake, digestibility and nitrogen utilization by sheep fed with provenances of Calliandra calothyrsus Meissner with different tannin structure Lascano Aguilar, Carlos Eduardo Ávila Vargas, P. Stewart, J feed crops sheep feed legumes calliandra calothyrsus digestibility tannins ovinos leguminosas forrajeras digestibilidad taninos A trial with sheep (housed in metabolic cages, and fitted with ruminal and duodenal cannulas) fed sun-dried forage of two Calliandra calothyrsus provenances (San Ramon —CIAT 22310 and Patulul CIAT— 22316) harvested in sites with contrasting soil fertility was carried out to further define the biological significance of the different chemical structure in the tannin of Calliandra provenances. Six African-type sheep were assigned to one of four treatments (T1: San Ramón grown in Quilichao with infertile soils, T2: Patulul grown in Quilichao with infertile soils, T3: San Ramón grown in Palmira with fertile soils, and T4: Patulul grown in Palmira with fertile soils) arranged in an Unbalanced Simple Crossover Design. Results showed that extractable tannins in Patulul comprised mainly procyanidin subunits, whereas the tannin fraction in San Ramón was composed largely of prodelphinidin subunits. The DM intake and digestibility of Calliandra were greater (P<0.05) with San Ramón than with Patulul. Intake was also greater (P<0.05) with provenances harvested in the site with fertile soil than in the site with acid soils. Absolute and relative values of ruminal escape dietary N in sheep were greater (P<0.05) with San Ramón than with Patulul, which is consistent with laboratory results on tannin astringency. Thus for the first time we have evidence suggesting that the chemical structure of condensed tannins in tropical legumes can have an effect on N utilization by ruminants. The fact that in vivo results on ruminal escape N were in close agreement with results on astringency of extractable condensed tannins from Calliandra provenances validates the use of laboratory astringency tests for screening tropical legumes with tannins for quality traits. Para poder definir mejor el significado biológico de la diferente estructura química de los taninos de dos procedencias (San Ramon – CIAT 22310 y Patulul – CIAT 22316) de Calliandra calothyrsus se realizó un ensayo de alimentación con ovinos fistulados en el rumen y duodeno, alojados en jaula metabólica y alimentados con forraje seco al sol de las dos procedencias de Calliandra cosechadas en sitios con suelos de fertilidad contrastante. Seis ovinos de pelo tipo Africano se asignaron al azar a 4 tratamientos (T1: -San Ramón cosechada en Quilichao con suelos de baja fertilidad, T2: –Patulul cosechada en Quilichao con suelos de baja fertilidad, T3: -San Ramón cosechada en Palmira con suelos fértiles, y T4: –Patulul cosechada en Palmira con suelos fertiles) dispuestos en un diseño Reversible Simple no Balanceado. Los resultados mostraron que el consumo de MS y la digestibilidad de Calliandra fueron mayores (P<0.05) con la procedencia San Ramón que con la procedencia Patulul, y que el consumo también fue mayor (P<0.05) con el forraje cosechado en el sitio con suelos más fértiles. Los valores absolutos y relativos de proteína del forraje que escapo degradación en el rumen (proteína de escape o sobrepasante) fueron mayores (P<0.05) con la procedencia San Ramón que con Patulul, lo cual es consistente con resultados de astringencia de los taninos de las dos procedencias medida en el laboratorio. Por lo tanto, por primera vez tenemos evidencia que sugiere que la estructura química de los taninos de leguminosas tropicales puede tener un efecto en la utilización de nitrógeno por rumiantes. El hecho de que los resultados de proteína sobrepasante medidos in vivo estuvieran de acuerdo con los resultados de astringencia de taninos de las procedencias de Calliandra determinadas en el laboratorio, valida el uso de estos métodos de astringencia para la selección de leguminosas tropicales por calidad nutritiva.. 2003 2014-09-24T08:42:22Z 2014-09-24T08:42:22Z Journal Article https://hdl.handle.net/10568/43594 en Open Access |
| spellingShingle | feed crops sheep feed legumes calliandra calothyrsus digestibility tannins ovinos leguminosas forrajeras digestibilidad taninos Lascano Aguilar, Carlos Eduardo Ávila Vargas, P. Stewart, J Intake, digestibility and nitrogen utilization by sheep fed with provenances of Calliandra calothyrsus Meissner with different tannin structure |
| title | Intake, digestibility and nitrogen utilization by sheep fed with provenances of Calliandra calothyrsus Meissner with different tannin structure |
| title_full | Intake, digestibility and nitrogen utilization by sheep fed with provenances of Calliandra calothyrsus Meissner with different tannin structure |
| title_fullStr | Intake, digestibility and nitrogen utilization by sheep fed with provenances of Calliandra calothyrsus Meissner with different tannin structure |
| title_full_unstemmed | Intake, digestibility and nitrogen utilization by sheep fed with provenances of Calliandra calothyrsus Meissner with different tannin structure |
| title_short | Intake, digestibility and nitrogen utilization by sheep fed with provenances of Calliandra calothyrsus Meissner with different tannin structure |
| title_sort | intake digestibility and nitrogen utilization by sheep fed with provenances of calliandra calothyrsus meissner with different tannin structure |
| topic | feed crops sheep feed legumes calliandra calothyrsus digestibility tannins ovinos leguminosas forrajeras digestibilidad taninos |
| url | https://hdl.handle.net/10568/43594 |
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