In vitro assessment of nutritive value of date palm by-products as feed for ruminants
Boufennara, Souhil ; Bouazza, Lyas ; de Vega, Antonio (Universidad de Zaragoza) ; Fondevila, Manuel (Universidad de Zaragoza) ; Amanzougarene, Zahia ; López, Secundino
Resumen: Date-palm leaves, pedicels, date-pits and waste dates are date-palm by-products (DPBP), routinely used as a feed resource by oasis farmers. This work aims to assess in vitro the chemical composition and nutritional value of these DPBP, including waste dates from three varieties (Bouarus, Harchaya and Kentichi). Vetch-oat hay was used as a reference feed material. Palm leaves showed the highest NDF, ADF, lignin and crude protein contents (609, 435, 84, 64 g kg-1 DM, respectively). Cumulative gas production at 144 h of incubation was greatest for Kentichi dates (330 mL g-1DM) and lowest for date-pits (69 mL g-1DM). Regardless of the variety, waste dates showed the highest DM effective ruminal degradability (ED=0.48-0.49; estimated for a passage rate of 0.03 h-1) and organic matter digestibility (OMD), whereas date-pits seemed to be a poorly degradable material, with an ED coefficient of 0.09 g g-1 DM. The lowest total VFA production from ruminal fermentation was with date-pits and the highest with waste dates of the Bouarus variety. These results suggest that waste dates, albeit their low protein content, should be considered highly digestible with energy concentrations as high as that of vetch-oat hay. Palm leaves and pedicels can be considered as highly fibrous emergency roughages for low-producing animals. When DPBP are used as feedstuffs, protein supplements will be necessary to balance the ruminant diets.
Idioma: Inglés
DOI: 10.9755/ejfa.2016-01-104
Año: 2016
Publicado en: Emirates Journal of Food and Agriculture 28, 10 (2016), 695-703
ISSN: 2079-052X
Factor impacto JCR: 0.494 (2016)
Categ. JCR: AGRONOMY rank: 61 / 83 = 0.735 (2016) - Q3 - T3
Categ. JCR: FOOD SCIENCE & TECHNOLOGY rank: 109 / 129 = 0.845 (2016) - Q4 - T3
Factor impacto SCIMAGO: 0.296 - Agronomy and Crop Science (Q3) - Food Science (Q3) - Applied Microbiology and Biotechnology (Q3) - Animal Science and Zoology (Q3)
Tipo y forma: Article (Published version)
Área (Departamento): Área Producción Animal (Dpto. Produc.Animal Cienc.Ali.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
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Idioma: Inglés
DOI: 10.9755/ejfa.2016-01-104
Año: 2016
Publicado en: Emirates Journal of Food and Agriculture 28, 10 (2016), 695-703
ISSN: 2079-052X
Factor impacto JCR: 0.494 (2016)
Categ. JCR: AGRONOMY rank: 61 / 83 = 0.735 (2016) - Q3 - T3
Categ. JCR: FOOD SCIENCE & TECHNOLOGY rank: 109 / 129 = 0.845 (2016) - Q4 - T3
Factor impacto SCIMAGO: 0.296 - Agronomy and Crop Science (Q3) - Food Science (Q3) - Applied Microbiology and Biotechnology (Q3) - Animal Science and Zoology (Q3)
Tipo y forma: Article (Published version)
Área (Departamento): Área Producción Animal (Dpto. Produc.Animal Cienc.Ali.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2020-02-21-13:39:13)
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Record created 2017-02-22, last modified 2020-02-21