In vitro assessment of nutritive value of date palm by-products as feed for ruminants
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 DM, respectively). Cumulative gas production at 144 h of incubation was greatest for Kentichi dates (330 mL gDM) and lowest for date-pits (69 mL gDM). 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) and organic matter digestibility (OMD), whereas date-pits seemed to be a poorly degradable material, with an ED coefficient of 0.09 g g 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.
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United Arab Emirates University
2016
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Subjects: | Nutritive value, Rumen, In vitro fermentation, Chemical compositions, |
Online Access: | http://hdl.handle.net/10261/142288 |
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dig-igm-es-10261-1422882022-04-07T08:17:51Z In vitro assessment of nutritive value of date palm by-products as feed for ruminants Boufennara, S. Bouazza, L. de Vega, Antonio Fondevila, M. Amanzougarene, Zahia López, Secundino Nutritive value Rumen In vitro fermentation Chemical compositions 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 DM, respectively). Cumulative gas production at 144 h of incubation was greatest for Kentichi dates (330 mL gDM) and lowest for date-pits (69 mL gDM). 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) and organic matter digestibility (OMD), whereas date-pits seemed to be a poorly degradable material, with an ED coefficient of 0.09 g g 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. Peer Reviewed 2017-01-09T13:23:17Z 2017-01-09T13:23:17Z 2016 2017-01-09T13:23:17Z artículo http://purl.org/coar/resource_type/c_6501 Emirates Journal of Food and Agriculture 28: 695- 703 (2016) 2079-052X http://hdl.handle.net/10261/142288 10.9755/ejfa.2016-01-104 2079-0538 http://dx.doi.org/10.9755/ejfa.2016-01-104 Sí none United Arab Emirates University |
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Nutritive value Rumen In vitro fermentation Chemical compositions Nutritive value Rumen In vitro fermentation Chemical compositions Boufennara, S. Bouazza, L. de Vega, Antonio Fondevila, M. Amanzougarene, Zahia López, Secundino In vitro assessment of nutritive value of date palm by-products as feed for ruminants |
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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 DM, respectively). Cumulative gas production at 144 h of incubation was greatest for Kentichi dates (330 mL gDM) and lowest for date-pits (69 mL gDM). 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) and organic matter digestibility (OMD), whereas date-pits seemed to be a poorly degradable material, with an ED coefficient of 0.09 g g 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. |
format |
artículo |
topic_facet |
Nutritive value Rumen In vitro fermentation Chemical compositions |
author |
Boufennara, S. Bouazza, L. de Vega, Antonio Fondevila, M. Amanzougarene, Zahia López, Secundino |
author_facet |
Boufennara, S. Bouazza, L. de Vega, Antonio Fondevila, M. Amanzougarene, Zahia López, Secundino |
author_sort |
Boufennara, S. |
title |
In vitro assessment of nutritive value of date palm by-products as feed for ruminants |
title_short |
In vitro assessment of nutritive value of date palm by-products as feed for ruminants |
title_full |
In vitro assessment of nutritive value of date palm by-products as feed for ruminants |
title_fullStr |
In vitro assessment of nutritive value of date palm by-products as feed for ruminants |
title_full_unstemmed |
In vitro assessment of nutritive value of date palm by-products as feed for ruminants |
title_sort |
in vitro assessment of nutritive value of date palm by-products as feed for ruminants |
publisher |
United Arab Emirates University |
publishDate |
2016 |
url |
http://hdl.handle.net/10261/142288 |
work_keys_str_mv |
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1777664002003828736 |