Rice straw degradation and biomass synthesis by rumen micro-organisms in continuous culture in response to ammonia treatment and legume extract supplementation

Broudiscou, Laurent; Agbagla-Dobnani, A.; Papon, Yves; Cornu, Agnès; Grenet, Élisabeth; Broudiscou, A. F.

doi:10.1016/s0377-8401(03)00052-x

Cited by 9 publications

(10 citation statements)

References 29 publications

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“…0.30 v. 0.46 for ADF), whereas at higher input levels they were not modified by straw treatment (Broudiscou et al, 2003). The present work was aimed at addressing the origin and extent of this interaction with respect to cell wall constituents.…”

Section: Introductionmentioning

confidence: 92%

“…A batch of straw was treated with ammonia as described in Broudiscou et al (2003). The TRS and a batch of URS were both ground through a hammer mill (screen aperture of 8 mm) and pelleted (Unité de Pré paration des Aliments Expé rimentaux, INRA Jouy-en-Josas, France).…”

Section: Experimental Designmentioning

confidence: 99%

“…Before the experiment, a batch of lucerne at the beginning of flowering (first growth) was coarsely chopped and divided into portions of 200 g, immediately stored at 2208C in air-tight plastic bags until use. On each day of incubation, a portion was thawed and extracted as described in Broudiscou et al (2003). The soluble sugars and CP contents of the extract were 12.0 and 15.93 g/l, respectively.…”

Section: Experimental Designmentioning

confidence: 99%

“…Animal care and use procedures were approved by the French Ministry of Agriculture in agreement with French regulations for animal experimentation (guideline 19/04/1988). The fermentor design and incubation procedure is detailed in Broudiscou et al (2003). The dilution rates of particle and liquid phases were set at 0.03 and 0.06/h.…”

Section: Experimental Designmentioning

confidence: 99%

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Rumen digestion of rice straw structural polysaccharides: effect of ammonia treatment and lucerne extract supplementation in vitro

Agbagla-Dohnani

Cornu

Broudiscou

2012

animal

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The combined effects of lucerne (Medicago sativaL.) extract supplementation and ammonia treatment of rice straw (Oryza sativa, variety Thaibonnet) on the ruminal digestion of cell wall components were investigated in six continuous culture systems using a randomised complete block design. Data were fitted to second-order polynomial models. Untreated rice straw had higher contents of ash-free cell wall residues (CWR; 763v.687 g/kg dry matter (DM)) and non-cellulosic sugars (191v.166 g/kg DM) than treated rice straw. Ammoniation preferentially removed xylose, which resulted in a lower xylose-to-arabinose ratio (5.1v.5.8). In absence of lucerne supplementation and ammoniation, degradability coefficients were 0.54, 0.46, 0.58, 0.54, 0.42 and 0.60 for cellulose–glucose, xylose, arabinose, galactose, mannose and uronic acids, respectively. Both factors had significant effects on the microbial degradation of structural polysaccharides. With lucerne extract at an optimal level, ammonia treatment increased ash-free cell wall degradation by more than 10%. The degradability coefficients were increased by ammoniation without any significant interaction with lucerne extract, except for glucose, whose degradability was mostly influenced by lucerne extract in a curvilinear way. The comparison of regression coefficients in cell wall and CWR models suggested that ammoniation improved the degradabilities of xylose, galactose and mannose by partly solubilising the corresponding hemicelluloses and by improving the susceptibility of the remaining fraction to microbial attack, whereas it increased the degradability of arabinose only by favouring microbial attack.

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Section: Introductionmentioning

confidence: 92%

Section: Experimental Designmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

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Rumen digestion of rice straw structural polysaccharides: effect of ammonia treatment and lucerne extract supplementation in vitro

Agbagla-Dohnani

Cornu

Broudiscou

2012

animal

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“…The results revealed that, the CP content increased with 53% comparing with the untreated materials followed by NFE that increased 11% while, ash and GE [20] and Rzedzicki and Sobota [21]. Moreover, Broudiscou et al [22] mushrooms are able to degrade between 25 and 60% of the dry weight of plant tissues although their efficiency varies according to the species, yield strain and the plant type. Williams et al [23] found that biological treatment for straw produced more free sugars, more protein and gave less cellulose as well as lignin with an increase content of ash comparing with the untreated materials.…”

Section: Broad Bean By-productsmentioning

confidence: 99%

Biological Treatment of Broad Bean Hulls and its Evaluation through Tilapia Fingerlings (Oreochromis Niloticus) Feeding

Khalafalla¹

2015

J Aquac Res Development

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Assessment of nutritive value of cereal and legume straws based on chemical composition and in vitro digestibility

et al. 2005

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The nutritive value of 17 straws was determined on the basis of their chemical composition, in vitro dry matter (DM) digestibility and rumen fermentation kinetics (from gas production curves measured in vitro). Five roughages were from the cereal species Avena sativa (oat), Hordeum vulgare (barley), Secale cereale (rye), Triticum aestivum (wheat) and Zea mays (maize stover). The other 12 samples were legume straws, two samples from each of the species Cicer arietinum (chickpea), Lens culinaris (lentil) and Phaseolus vulgaris (bean) and one sample from each of the species Lathyrus sativus (chickling vetch), Lupinus albus (white lupin), Pisum sativum (field pea), Vicia articulata (oneflowered vetch), Vicia ervilia (bitter vetch) and Vicia sativa (common vetch). All samples were collected after harvesting from different farms located in León (northwestern Spain). Based on their chemical composition, digestibility and gas production characteristics, species could be clustered into two groups with a significant linkage distance, one for cereal straws that merged at a level of similarity of 80% and the other for legume straws with a degree of similarity of 50%. Species varied widely and significant differences (P < 0.05) were observed between the two groups of straws. Legume straws showed higher crude protein (74 ± 6.1 vs 29 ± 2.2 g kg −1 DM) and lower fibre (584 ± 18.1 vs 793 ± 27.5 g neutral detergent fibre kg −1 DM) contents than cereal straws and, consequently, DM digestibility coefficients (0.670 vs 0.609; standard error of difference 0.0054) and metabolisable energy values (7.4 ± 0.15 vs 5.7 ± 0.24 MJ kg −1 DM) were significantly greater in legume than in cereal straws. Although there were noticeable differences among species within each botanical family, legume straws showed better nutritional quality than cereal straws, indicating that they could be considered promising and interesting sources of roughage for incorporation into ruminant diets.

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Rice straw degradation and biomass synthesis by rumen micro-organisms in continuous culture in response to ammonia treatment and legume extract supplementation

Cited by 9 publications

References 29 publications

Rumen digestion of rice straw structural polysaccharides: effect of ammonia treatment and lucerne extract supplementation in vitro

Rumen digestion of rice straw structural polysaccharides: effect of ammonia treatment and lucerne extract supplementation in vitro

Biological Treatment of Broad Bean Hulls and its Evaluation through Tilapia Fingerlings (Oreochromis Niloticus) Feeding

Assessment of nutritive value of cereal and legume straws based on chemical composition and in vitro digestibility

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