Nutritive quality of foxtail millet (Setaria italica) grass, hay and silage, and seed fatty acid profile
Barra lateral del artículo
Publicado:
jun. 3, 2016
Contenido principal del artículo
Resumen
Foxtail millet (Setaria italica) is grown for green grass, hay and silage and is good forage for livestock. The aim of this study was to determine the nutritive quality of foxtail millet grass, hay and silage harvested in the Po valley (northern Italy) at cut or at wilted level. The forage samples used for the trial were cut at budding stage on 8 subplots of 1 m2, randomLy located in 2 x
4 m plots. Two replicates were collected for each wilting levels: at cut (299 g/kg FM) and after 24 h of wilting (487 g/kg FM). Finally, two replicates of hay samples were collected after 36 h of wilting (918 g/kg FM) on the same two subplots, in order to determine chemical composition, gross energy, in vitro true digestibility (IVTD), indigestible neutral detergent fibre (INDF) of hay and grass samples. Moreover, herbage samples for ensiling were taken at cut and after 24 h of wilting, respectively. Foxtail millet forage was ensiled in sterile 2–litre laboratory glass silos. Two replications were performed at each dry matter level, in order to determine chemical composition, gross energy, IVTD,
INDF, and fermentation characteristics of silages. The variability in herbage quality characteristics after different wilting periods and the variability in silage characteristics were analyzed for their statistical significance via analysis of variance (ANOVA) to test the effect of wilting level. Herbage wilting had no effects on nutritional parameters, reflecting excellent drying conditions.
The results of ensiling indicate that the fermentation of foxtail millet is characterized by the presence of some alcohols and volatile fatty acids. No significant differences were found in crude protein, fibre, gross energy, pH or fermentation characteristics, with the exception of ethanol and butyric acid. The values of IVTD and INDF were improved in wilting silage. The good
results obtained in lab–scale silos, with silage characterized by restricted fermentation at high wilting level, would seem to suggest that foxtail millet has the potential for large–scale ensiling, if it is harvested at budding stage and wilted to a DM level of more than 470 g/kg FM. Moreover, because few data are available in literature, the fat content and fatty acid (FA) profile of the seeds used in the agronomic trial were also determined. The lipid content of the foxtail millet seeds was 31.9 g/kg FM, while the predominant FAs were linoleic, oleic, and palmitic acid. The contents of stearic and linolenic acids were 32 and 27 g/kg total FA, respectively. The contents of palmitoleic, arachidic, gadoleic and behenic acid were lower than 7 g/kg total F A.
Key words: Setaria italica, chemical composition, fatty acid, ensilage, forage
4 m plots. Two replicates were collected for each wilting levels: at cut (299 g/kg FM) and after 24 h of wilting (487 g/kg FM). Finally, two replicates of hay samples were collected after 36 h of wilting (918 g/kg FM) on the same two subplots, in order to determine chemical composition, gross energy, in vitro true digestibility (IVTD), indigestible neutral detergent fibre (INDF) of hay and grass samples. Moreover, herbage samples for ensiling were taken at cut and after 24 h of wilting, respectively. Foxtail millet forage was ensiled in sterile 2–litre laboratory glass silos. Two replications were performed at each dry matter level, in order to determine chemical composition, gross energy, IVTD,
INDF, and fermentation characteristics of silages. The variability in herbage quality characteristics after different wilting periods and the variability in silage characteristics were analyzed for their statistical significance via analysis of variance (ANOVA) to test the effect of wilting level. Herbage wilting had no effects on nutritional parameters, reflecting excellent drying conditions.
The results of ensiling indicate that the fermentation of foxtail millet is characterized by the presence of some alcohols and volatile fatty acids. No significant differences were found in crude protein, fibre, gross energy, pH or fermentation characteristics, with the exception of ethanol and butyric acid. The values of IVTD and INDF were improved in wilting silage. The good
results obtained in lab–scale silos, with silage characterized by restricted fermentation at high wilting level, would seem to suggest that foxtail millet has the potential for large–scale ensiling, if it is harvested at budding stage and wilted to a DM level of more than 470 g/kg FM. Moreover, because few data are available in literature, the fat content and fatty acid (FA) profile of the seeds used in the agronomic trial were also determined. The lipid content of the foxtail millet seeds was 31.9 g/kg FM, while the predominant FAs were linoleic, oleic, and palmitic acid. The contents of stearic and linolenic acids were 32 and 27 g/kg total FA, respectively. The contents of palmitoleic, arachidic, gadoleic and behenic acid were lower than 7 g/kg total F A.
Key words: Setaria italica, chemical composition, fatty acid, ensilage, forage
Detalles del artículo
Cómo citar
Peiretti, P. G., & Tassone, S. (2016). Nutritive quality of foxtail millet (Setaria italica) grass, hay and silage, and seed fatty acid profile. Cuban Journal of Agricultural Science, 50(1). Recuperado a partir de https://cjascience.com/index.php/CJAS/article/view/606
Sección
Ciencia de los pastos y otros cultivos
Aquellos autores/as que tengan publicaciones con esta revista, aceptan los términos siguientes:
- Los autores/as conservarán sus derechos de autor y garantizarán a la revista el derecho de primera publicación de su obra, el cuál estará simultáneamente sujeto a la Licencia Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) que permite a terceros compartir la obra siempre que se indique su autor y su primera publicación esta revista. Bajo esta licencia el autor será libre de:
- Compartir — copiar y redistribuir el material en cualquier medio o formato
- Adaptar — remezclar, transformar y crear a partir del material
- El licenciador no puede revocar estas libertades mientras cumpla con los términos de la licencia
Bajo las siguientes condiciones:
- Reconocimiento — Debe reconocer adecuadamente la autoría, proporcionar un enlace a la licencia e indicar si se han realizado cambios. Puede hacerlo de cualquier manera razonable, pero no de una manera que sugiera que tiene el apoyo del licenciador o lo recibe por el uso que hace.
- NoComercial — No puede utilizar el material para una finalidad comercial.
- No hay restricciones adicionales — No puede aplicar términos legales o medidas tecnológicas que legalmente restrinjan realizar aquello que la licencia permite.
- Los autores/as podrán adoptar otros acuerdos de licencia no exclusiva de distribución de la versión de la obra publicada (p. ej.: depositarla en un archivo telemático institucional o publicarla en un volumen monográfico) siempre que se indique la publicación inicial en esta revista.
- Se permite y recomienda a los autores/as difundir su obra a través de Internet (p. ej.: en archivos telemáticos institucionales o en su página web) antes y durante el proceso de envío, lo cual puede producir intercambios interesantes y aumentar las citas de la obra publicada. (Véase El efecto del acceso abierto).