In vitro assessment of nutritive value of date palm by-products as feed for ruminants

Boufennara, S.; Bouazza, L.; Antonio, De; Fondevila, M.; Amanzougarene, Z.; López, S.

doi:10.9755/ejfa.2016-01-104

Cited by 15 publications

(15 citation statements)

References 32 publications

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“…This indicates that the exogenous fibrolytic enzymes increased the fermentable material. Increasing the gas production without improving the soluble organic matter in the pre-incubation period is consistent with the result found by Colombatto et al (2003) when they treated alfalfa stems with a commercial fibrolytic enzyme (Liquicell 2500; Specialty Enzymes and Biochemicals Co. CA, USA). Those results indicated that the exogenous fibrolytic enzymes act synergistically with ruminal microbial enzymes and the enzymes may also change the fibrolytic structure of the DK during the period of substrate-enzyme interaction, making them more amenable to rumen microorganism attachment .…”

Section: Discussionsupporting

confidence: 87%

“…The chemical compositions of date palm by-products in this study are similar to the results found by Genin et al (2004), Kholif et al (2015), and Boufennara et al (2016). The CP content of date palm by-products was generally low (CP < 6 % DM) especially for floral stems (CP = 2.5 % DM).…”

Section: Discussionsupporting

confidence: 86%

“…The EFE was used to solubilise the OM during the preinteraction period with palm by-products, prior to incubation with rumen fluid, following the procedure of Colombatto et al (2003) and Elwakeel et al (2007). Samples of 1 g DM of each substrate supplemented with the EFE with an adequate dose were weighed into glass flasks; then 100 mL of distilled water was added.…”

Section: Experiments 1: Pre-incubation Effectsmentioning

confidence: 99%

“…Indeed, date kernels (DKs), floral stems (FSs), and palm fronds (PFs) are characterised by high levels of lignocellulose content, low protein content, low digestibility, and low palatability. Wasted dates (WDs) are characterised by low protein and lignocellulose content (Genin et al, 2004;Kholif et al, 2015;Boufennara et al, 2016;Azzaz et al, 2017). Many technologies have been employed to increase the nutritive values of poor-quality roughage.…”

Section: Introductionmentioning

confidence: 99%

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Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products

et al. 2019

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This study was conducted in order to assess the influence of four doses (0, 0.5, 1, and 2 mg (g dry matter)-normal1 of commercial fibrolytic enzymes (MAXFIBER-Inormal®, SHAUMANN GmbH, Wahlstedt, Germany) on in vitro fermentation of date palm (Phoenix dactylifera) by-products: date kernels, wasted dates, floral stems, and palm fronds. Rumen contents were obtained from two non-lactating Holstein cows. Enzyme supplementation to by-products was carried out 12 h prior to incubation.Compared to the control, the enzymatic supplementation quadratically increased the extent but not the gas production rate of date kernel fermentation. Indeed, the potential gas production increased notably by 14.8 % with the lowest enzymes dose following recorded gas production after 48, 72, and 96 h of incubation. The estimated organic-matter digestibility, metabolisable energy, and total volatile fatty acids in the incubation fluid tended to be increased with the lowest dose by 7.8 %, 8.4 %, and 13.9 % respectively. For the wasted dates, this feed additive tended to linearly increase the gas production rate of fermentation with the highest dose. On the other hand, this supplementation had no effect on the ruminal fermentation of the floral stems and palm fronds. The exogenous fibrolytic enzymes were more effective on fibrous but not on lignified date palm by-products.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionsupporting

confidence: 86%

Section: Experiments 1: Pre-incubation Effectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products

et al. 2019

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“…The use of DPS in animal feed is the most common practice, mainly in the rural areas in the Middle East. Date palm seeds are high in cellulose (24-46%), hemicellulose, (7-28%) and lignin (7-26%) and therefore their rumen degradability is very low (22.7%, Boufennara et al, 2016). The low rumen degradability of the low quality feeds is mainly due to the crystal structure of cellulose and the covalent linkages between structural carbohydrates and lignin (Jackson, 1977).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ultrasound Processing and Exogenous Cellulase Supplementation on the Ruminal Degradability of Palm Date Seeds

Aboragah¹,

Embaby²,

Günal³

et al. 2019

American Journal of Animal and Veterinary Sciences

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The objective of this study was to evaluate the effects of sonication and enzyme supplements on rumen degradability of date palm seeds (DPS). The effect of alkali-assisted sonication and the addition of cellulase enzyme supplements (40 endoglucanase units/g dry matter) derived from Aspergillus niger or Trichoderma longibrachiatum on DPS ruminal degradability were evaluated under in vitro conditions. The in vitro ruminal degradability of neutral detergent fiber (NDF) and organic matter (OM) for the unsonicated seeds was not affected (p>0.10) by enzyme supplements. On the other hand, alkali-assisted sonication increased the in vitro rumen degradability of seeds' NDF and OM and the addition of Trichoderma longibrachiatum cellulase enzyme to sonicated seeds slightly but significantly increased (p<0.01) their in vitro NDF and OM degradability. The results indicate that sonication along with alkali pretreatment could improve the NDF and OM degradability of DPS in rumen. The pretreatment combined effect of ultrasound and Trichoderma longibrachiatum cellulase enzyme could be beneficial in increasing the inclusion rate of DPS in ruminant animals' diets.

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Potential of indigenous legume fodder tree and shrubs to animal feed and mitigation of methane emission in the semi‐humid condition of southern Ethiopia

2023

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The study was conducted to investigate the in vitro gas production characteristics and methane (CH4) emission potential of indigenous legume fodder trees and shrubs (ILFTS). The most predominant 11 ILFTS species were selected, and leaves and fruit/pod samples were collected, oven dried, and ground. The potential leaf biomass yield (PBY), dry matter (DM), ether extract, digestible crude protein, carbohydrate (CHO), acid detergent lignin, ash, total phenol, condensed tannin, gross energy, digestible energy, metabolizable energy (ME), gas production characteristics, CH4 emissions, organic matter digestibility (OMD), and short‐chain fatty acids (SCFA) were determined. ANOVA and independent t test were used to examine variation among species in plants nature and between fruits and pods within agroecosystems, respectively. Correlation analysis was used to determine relationships among parameters. The study indicated that only DM and CHO showed substantial variation in nutritional quality parameters among trees, shrubs, and fruit/pods in the lowlands. Fruits/pods and trees displayed significant differences in gas production characteristics in the lowlands, unlike shrubs, which had non‐substantial variations. Moreover, the PBY, CH4 emission, OMD, and ME of ILFTS revealed substantial variation (P < .05) with species and among trees, shrubs, and fruits/pods in both agroecosystems. Besides, CH4 production showed a positive significant correlation with gas volume and (b) substantiating the effect of rate and degree of fiber fermentation on CH4 emission. It was discovered that there was a positive significant correlation between the 6 and 24 h incubation period, (c) which substantiated the need for optimal microbial density and substrate for high rate constant gas production of b (c). In conclusion, ILFTS produce considerable biomass rich in nutrients but vary in the degradability of CHO with plant nature, species, and forage origin. This elicits differences in gas production characteristics and CH4 emission with in vitro fermentation, resulting in differences in the corresponding OMD, ME, and SCFA values.

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In vitro assessment of nutritive value of date palm by-products as feed for ruminants

Cited by 15 publications

References 32 publications

Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products

Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products

The Effect of Ultrasound Processing and Exogenous Cellulase Supplementation on the Ruminal Degradability of Palm Date Seeds

Potential of indigenous legume fodder tree and shrubs to animal feed and mitigation of methane emission in the semi‐humid condition of southern Ethiopia

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