In vitro fermentation kinetics of some halophyte shrubs sampled at three stages of maturity

Haddi, Mohamed-Laid; Filacorda, Stefano; Meniai, Khalid; Rollin, Frédéric; Susmel, P.

doi:10.1016/s0377-8401(02)00323-1

Cited by 37 publications

(22 citation statements)

References 7 publications

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“…gas production (A) (r0(0.83, P B0.01) or c (r0 (0.69, P B0.01) is consistent with the results of Haddi et al (2003) who reported that there were significant negative correlation between NDF and ADF, and the rate and extent of gas production. The negative effect of cell wall content on gas production could be due to the reduction of the microbial activity through increasing the adverse environmental conditions as incubation time progresses.…”

Section: Gas Parameters Varietysupporting

confidence: 88%

Chemical composition,in vitrodigestibility and kinetics of fermentation of whole-crop forage from 18 different varieties of oat (Avena sativaL.)

Kafilzadeh

Heidary

2013

Journal of Applied Animal Research

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The aim of this study was to compare the yield of forage and the yield of digestible organic matter as well as chemical composition and kinetics of fermentation of forage produced from 18 different varieties of oat (Avena Sativa L.) grown under the same agronomic condition. Dry matter and organic matter digestibility were determined using in vitro two-stage method and gas production technique was used to measure the kinetics of fermentation of forage from different varieties. Yield of forages varied significantly from 15.6 to 26.3 ton haLGorskij 1026 variety had the highest forage yield. The content of crude protein, neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) were significantly (PB0.01) different among varieties of oat used in this study. There were significant (PB0.01) differences among varieties in terms of in vitro dry matter digestibility (IVDMD) and organic matter digestibility (IVOMD) and metabolisable energy (ME) from 18 varieties of oat forage. Possum and LGorskij 1026 varieties had the highest and lowest IVOMD, respectively (67/4 vs. 54/9%). The ME varied from 5.76 to 7.13 MJ kg(1 DM. The mean value of digestible organic matter (DOM) yield was 10.8 ton ha ).Significant difference was observed in the potential gas production (A), constant rate (c) and lag time among different varieties. The fractional rate of gas production (c, h(1 ) ranged from 0.029 to 0.040. The result emphasised that in any evaluation of oat varieties, not only yield and digestibility but also kinetics of digestion or fermentation should be taken into consideration.

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Section: Gas Parameters Varietysupporting

confidence: 88%

Chemical composition,in vitrodigestibility and kinetics of fermentation of whole-crop forage from 18 different varieties of oat (Avena sativaL.)

Kafilzadeh

Heidary

2013

Journal of Applied Animal Research

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“…Varieties with higher gas production had a shorter half time (t 1/2 ). The negative correlation found between asymptotic gas production (A) with either NDF and ADF (r = -0.47, r = -0.50, P <0.01) is consistent with the results of Haddi et al (2003). The negative effect of cell wall content on gas production could be the result of a reduction of microbial activity through increasing the adverse environmental conditions as incubation time progresses.…”

Section: Resultssupporting

confidence: 86%

Variety effect on composition, kinetics of fermentation and <i>in vitro</i> digestibility of oat (<i>Avena sativa</i> L.) straw and its neutral detergent fibre

Kafilzadeh¹,

Heidary²,

Bahraminejad³

2012

SA J. An. Sci.

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Yield, chemical composition, in vitro digestibility and kinetics of fermentation of straw from 18 varieties of oats (Avena sativa L.) were studied. All the straw varieties were grown in three replicates under the same agronomic conditions. Significance differences were observed in the yield of straw (4.4 to 7.5 ton dry matter (DM)/ha) from different varieties. The proportion of seed/straw from these varieties varied from 0.28 to 1.02. Crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) content varied from 24.2 to 48.1, 626 to 708, 437 to 533 and 52.0 to 92.4 g/kg DM, respectively in the straws. In vitro organic matter digestibility (IVOMD) differed among varieties and varied from 400 to 539 g/kg DM. The mean value of digestible organic matter yield (DOM) was 2.34 ton/ha. A significant difference was observed in the potential gas production (A) and lag time (L) among varieties. The fractional rate of gas production (c, /h) ranged from 0.030 to 0.034. The results emphasized that in any evaluation of oat varieties, kinetics of digestion or fermentation should be taken into consideration as well as yield and digestibility._________________________________________________________________________________

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“…Several IVFT have been performed using rumen fluid collected from slaughtered cattle, sheep, buffalo and dromedary (Haddi et al, 2003;Salem, 2005). To date, there are no reports directly comparing the use of rumen fluid from slaughtered animals with oral or rumen sampling in the same animal.…”

Section: Sampling Proceduresmentioning

confidence: 99%

Design, implementation and interpretation of in vitro batch culture experiments to assess enteric methane mitigation in ruminants—a review

Yáñez-Ruíz

Bannink

Dijkstra

et al. 2016

Animal Feed Science and Technology

131

120

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a b s t r a c tIn vitro fermentation techniques (IVFT) have been widely used to evaluate the nutritive value of feeds for ruminants and in the last decade to assess the effect of different nutritional strategies on methane (CH4) production. However, many technical factors may influence the results obtained. The present review has been prepared by the 'Global Network' FACCE-JPI international research consortium to provide a critical evaluation of the main factors that need to be considered when designing, conducting and interpreting IVFT experiments that investigate nutritional strategies to mitigate CH 4 emission from ruminants. Given the increasing and wide-scale use of IVFT, there is a need to critically review reports in the literature and establish what criteria are essential to the establishment and implementation of in vitro techniques. Key aspects considered include: i) donor animal species and number of animal used, ii) diet fed to donor animals, iii) collection and processing of rumen fluid as inoculum, iv) choice of substrate and incubation buffer, v) incubation procedures and CH 4 measurements, vi) headspace gas composition and vii) comparability of in vitro and in vivo measurements. Based on an evaluation of experimental evidence, a set of technical recommendations are presented to harmonize IVFT for feed evaluation, assessment of rumen function and CH 4 production.

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In vitro fermentation kinetics of some halophyte shrubs sampled at three stages of maturity

Cited by 37 publications

References 7 publications

Chemical composition,in vitrodigestibility and kinetics of fermentation of whole-crop forage from 18 different varieties of oat (Avena sativaL.)

Chemical composition,in vitrodigestibility and kinetics of fermentation of whole-crop forage from 18 different varieties of oat (Avena sativaL.)

Variety effect on composition, kinetics of fermentation and <i>in vitro</i> digestibility of oat (<i>Avena sativa</i> L.) straw and its neutral detergent fibre

Design, implementation and interpretation of in vitro batch culture experiments to assess enteric methane mitigation in ruminants—a review

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