Estimation of Total Digestible Nutrient Concentration for Short-Panicle Cultivars of Forage Rice (<i>Oryza sativa</i> L.) Silage
A linear regression model for predicting total digestible nutrient (TDN) concentration in forage rice (<i>Oryza sativa</i> L.) silage was previously developed with traditional cultivars (>30% dry matter, DM as panicle), and we here extend the linear regression model to two short-panic...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
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| Series: | Agronomy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4395/14/11/2710 |
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| Summary: | A linear regression model for predicting total digestible nutrient (TDN) concentration in forage rice (<i>Oryza sativa</i> L.) silage was previously developed with traditional cultivars (>30% dry matter, DM as panicle), and we here extend the linear regression model to two short-panicle cultivars, ‘Tachisuzuka’ and ‘Tachiayaka’ (<20% DM as panicle). Silage fermentation quality was superior for the short-panicle cultivars compared to the traditional ones, partly due to higher mono- and oligosaccharide concentrations in leaves and stems. Silage TDN concentration was previously estimated for traditional cultivars by in vitro dry matter digestibility (IVDMD) and crude ash (CA) concentration (estimated TDN = 0.329 × IVDMD − 0.688 × CA + 44.5, <i>r</i><sup>2</sup> = 0.815, <i>p</i> < 0.001). In vivo TDN concentration in silages of short-panicle cultivars, ranging from 49.5 to 58.3%, was nearly identical to the TDN concentration estimated by the equation with an error rate <5%, demonstrating that the new equation model can be satisfactorily applied to silages of short-panicle rice cultivars. |
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| ISSN: | 2073-4395 |