Management and cultivar effects on ruminant nutritional quality of pearl millet (Pennisetum glaucum (L.) R. Br.) stover. II. Effects of cultivar choice on stover quality and productivity
The paper investigates the variation in laboratory fodder quality traits in stover of 16 cultivars of pearl millet grown over 2 consecutive years and subjected to two different fertilizer regimes and planting densities. Stover quality traits were nitrogen and sugar content, in vitro digestibility an...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2007
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/32923 |
| _version_ | 1855514167717396480 |
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| author | Blümmel, Michael Bidinger, F.R. Hash, C.T. |
| author_browse | Bidinger, F.R. Blümmel, Michael Hash, C.T. |
| author_facet | Blümmel, Michael Bidinger, F.R. Hash, C.T. |
| author_sort | Blümmel, Michael |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The paper investigates the variation in laboratory fodder quality traits in stover of 16 cultivars of pearl millet grown over 2 consecutive years and subjected to two different fertilizer regimes and planting densities. Stover quality traits were nitrogen and sugar content, in vitro digestibility and metabolizable energy content as well as yield of digestible and metabolizable stover. Significant (P < 0.05) cultivar-dependent variations were observed for all these quality traits. Stover nitrogen contents were mostly below the levels (1.2% of dry matter) considered to be the minimum required for efficient feed digestion in the rumen, but choice of cultivar plus nitrogen fertilizer application could raise nitrogen levels to near, equal or above this threshold. Stover sugar contents were below 5% and mostly concentrated in the stems. Across management regimes stover in vitro digestibility varied by about 4% units, and by about 3-5% units within individual management regimes. Stover metabolizable energy contents of cultivars varied such that stover from superior cultivars could provide the energy maintenance requirement of livestock and theoretically moderate levels of live weight gains, while livestock fed on stover from poor cultivars would lose live weight. Yields of digestible and metabolizable stover (yield of stover dry matter times stover in vitro digestibility/metabolizable energy) varied among cultivars by at least 1.7-fold. Stover quality traits and grain yields of cultivars were largely unrelated (P > 0.05) suggesting that high stover quality will not be achieved on the expense of grain yield. Heritabilities for stover quality traits were high (h2 > 0.73) except for stover nitrogen content (h2 > 0.56). |
| format | Journal Article |
| id | CGSpace32923 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2007 |
| publishDateRange | 2007 |
| publishDateSort | 2007 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace329232023-12-08T19:36:04Z Management and cultivar effects on ruminant nutritional quality of pearl millet (Pennisetum glaucum (L.) R. Br.) stover. II. Effects of cultivar choice on stover quality and productivity Blümmel, Michael Bidinger, F.R. Hash, C.T. pennisetum glaucum nutritive value varieties management productivity crop residues feeds quality yields grain digestibility energy value carbohydrate content The paper investigates the variation in laboratory fodder quality traits in stover of 16 cultivars of pearl millet grown over 2 consecutive years and subjected to two different fertilizer regimes and planting densities. Stover quality traits were nitrogen and sugar content, in vitro digestibility and metabolizable energy content as well as yield of digestible and metabolizable stover. Significant (P < 0.05) cultivar-dependent variations were observed for all these quality traits. Stover nitrogen contents were mostly below the levels (1.2% of dry matter) considered to be the minimum required for efficient feed digestion in the rumen, but choice of cultivar plus nitrogen fertilizer application could raise nitrogen levels to near, equal or above this threshold. Stover sugar contents were below 5% and mostly concentrated in the stems. Across management regimes stover in vitro digestibility varied by about 4% units, and by about 3-5% units within individual management regimes. Stover metabolizable energy contents of cultivars varied such that stover from superior cultivars could provide the energy maintenance requirement of livestock and theoretically moderate levels of live weight gains, while livestock fed on stover from poor cultivars would lose live weight. Yields of digestible and metabolizable stover (yield of stover dry matter times stover in vitro digestibility/metabolizable energy) varied among cultivars by at least 1.7-fold. Stover quality traits and grain yields of cultivars were largely unrelated (P > 0.05) suggesting that high stover quality will not be achieved on the expense of grain yield. Heritabilities for stover quality traits were high (h2 > 0.73) except for stover nitrogen content (h2 > 0.56). 2007-08 2013-07-03T05:25:46Z 2013-07-03T05:25:46Z Journal Article https://hdl.handle.net/10568/32923 en Limited Access Elsevier Field Crops Research;103(2): 129-138 |
| spellingShingle | pennisetum glaucum nutritive value varieties management productivity crop residues feeds quality yields grain digestibility energy value carbohydrate content Blümmel, Michael Bidinger, F.R. Hash, C.T. Management and cultivar effects on ruminant nutritional quality of pearl millet (Pennisetum glaucum (L.) R. Br.) stover. II. Effects of cultivar choice on stover quality and productivity |
| title | Management and cultivar effects on ruminant nutritional quality of pearl millet (Pennisetum glaucum (L.) R. Br.) stover. II. Effects of cultivar choice on stover quality and productivity |
| title_full | Management and cultivar effects on ruminant nutritional quality of pearl millet (Pennisetum glaucum (L.) R. Br.) stover. II. Effects of cultivar choice on stover quality and productivity |
| title_fullStr | Management and cultivar effects on ruminant nutritional quality of pearl millet (Pennisetum glaucum (L.) R. Br.) stover. II. Effects of cultivar choice on stover quality and productivity |
| title_full_unstemmed | Management and cultivar effects on ruminant nutritional quality of pearl millet (Pennisetum glaucum (L.) R. Br.) stover. II. Effects of cultivar choice on stover quality and productivity |
| title_short | Management and cultivar effects on ruminant nutritional quality of pearl millet (Pennisetum glaucum (L.) R. Br.) stover. II. Effects of cultivar choice on stover quality and productivity |
| title_sort | management and cultivar effects on ruminant nutritional quality of pearl millet pennisetum glaucum l r br stover ii effects of cultivar choice on stover quality and productivity |
| topic | pennisetum glaucum nutritive value varieties management productivity crop residues feeds quality yields grain digestibility energy value carbohydrate content |
| url | https://hdl.handle.net/10568/32923 |
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