Effect of sward attributes on legume selection by oesophageal-fistulated and non-fistulated steers grazing a tropical grass-legume pasture
A grazing trial was carried out in the Eastern Plains of Colombia to compare legume selection by transiently grazed oesophageal-fistulated steers and non-fistulated steers permanently grazing pastures. The 6 pasture types investigated were Arachis pintoi-Brachiaria humidicola mixtures which differed...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/43391 |
| _version_ | 1855530340736565248 |
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| author | Hess, H.D. Kreuzer, M. Nosberger, J Wenk, C Lascano Aguilar, Carlos Eduardo |
| author_browse | Hess, H.D. Kreuzer, M. Lascano Aguilar, Carlos Eduardo Nosberger, J Wenk, C |
| author_facet | Hess, H.D. Kreuzer, M. Nosberger, J Wenk, C Lascano Aguilar, Carlos Eduardo |
| author_sort | Hess, H.D. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A grazing trial was carried out in the Eastern Plains of Colombia to compare legume selection by transiently grazed oesophageal-fistulated steers and non-fistulated steers permanently grazing pastures. The 6 pasture types investigated were Arachis pintoi-Brachiaria humidicola mixtures which differed in legume and grass mass per hectare and grass:legume ratios. The sward attributes explaining the greatest variation in legume selection by fistulated and non-fistulated steers were legume percentage in the forage on offer (r2 = 0.67) and available legume mass (r2 = 0.56), respectively. Legume selection by both groups of steers was correlated with legume bulk density (kg DM/ha/cm). However, the relationship was linear (r2 = 0.53) for fistulated steers with maximum dietary legume proportion reaching 92% and exponential (r2 = 0.52) for non-fistulated steers with a plateau at 25% dietary legume with individual values never exceeding 35%. This study confirms that legume selection under grazing differs between oesophageal-fistulated steers transiently grazing the pastures and resident intact steers, and indicates that this difference is associated with their contrasting response to changes in sward attributes. |
| format | Journal Article |
| id | CGSpace43391 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2002 |
| publishDateRange | 2002 |
| publishDateSort | 2002 |
| record_format | dspace |
| spelling | CGSpace433912023-02-15T05:17:18Z Effect of sward attributes on legume selection by oesophageal-fistulated and non-fistulated steers grazing a tropical grass-legume pasture Hess, H.D. Kreuzer, M. Nosberger, J Wenk, C Lascano Aguilar, Carlos Eduardo feed crops arachis pintoi brachiaria humidicola grazing pastures feed legumes feed grasses selection nutritive value diet botanical composition pastoreo pastizales leguminosas forrajeras gramíneas forrajeras selección valor nutritivo dieta composición botánica A grazing trial was carried out in the Eastern Plains of Colombia to compare legume selection by transiently grazed oesophageal-fistulated steers and non-fistulated steers permanently grazing pastures. The 6 pasture types investigated were Arachis pintoi-Brachiaria humidicola mixtures which differed in legume and grass mass per hectare and grass:legume ratios. The sward attributes explaining the greatest variation in legume selection by fistulated and non-fistulated steers were legume percentage in the forage on offer (r2 = 0.67) and available legume mass (r2 = 0.56), respectively. Legume selection by both groups of steers was correlated with legume bulk density (kg DM/ha/cm). However, the relationship was linear (r2 = 0.53) for fistulated steers with maximum dietary legume proportion reaching 92% and exponential (r2 = 0.52) for non-fistulated steers with a plateau at 25% dietary legume with individual values never exceeding 35%. This study confirms that legume selection under grazing differs between oesophageal-fistulated steers transiently grazing the pastures and resident intact steers, and indicates that this difference is associated with their contrasting response to changes in sward attributes. 2002 2014-09-24T08:42:04Z 2014-09-24T08:42:04Z Journal Article https://hdl.handle.net/10568/43391 en Open Access |
| spellingShingle | feed crops arachis pintoi brachiaria humidicola grazing pastures feed legumes feed grasses selection nutritive value diet botanical composition pastoreo pastizales leguminosas forrajeras gramíneas forrajeras selección valor nutritivo dieta composición botánica Hess, H.D. Kreuzer, M. Nosberger, J Wenk, C Lascano Aguilar, Carlos Eduardo Effect of sward attributes on legume selection by oesophageal-fistulated and non-fistulated steers grazing a tropical grass-legume pasture |
| title | Effect of sward attributes on legume selection by oesophageal-fistulated and non-fistulated steers grazing a tropical grass-legume pasture |
| title_full | Effect of sward attributes on legume selection by oesophageal-fistulated and non-fistulated steers grazing a tropical grass-legume pasture |
| title_fullStr | Effect of sward attributes on legume selection by oesophageal-fistulated and non-fistulated steers grazing a tropical grass-legume pasture |
| title_full_unstemmed | Effect of sward attributes on legume selection by oesophageal-fistulated and non-fistulated steers grazing a tropical grass-legume pasture |
| title_short | Effect of sward attributes on legume selection by oesophageal-fistulated and non-fistulated steers grazing a tropical grass-legume pasture |
| title_sort | effect of sward attributes on legume selection by oesophageal fistulated and non fistulated steers grazing a tropical grass legume pasture |
| topic | feed crops arachis pintoi brachiaria humidicola grazing pastures feed legumes feed grasses selection nutritive value diet botanical composition pastoreo pastizales leguminosas forrajeras gramíneas forrajeras selección valor nutritivo dieta composición botánica |
| url | https://hdl.handle.net/10568/43391 |
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