The effect of non-structural carbohydrate on <i>in vitro</i> first order disappearance kinetic of cellulose

Rezaii, Farkhondeh; Mesgaran, Mohsen Danesh; Moussavi, Alireza Heravi

doi:10.1017/s1752756200030167

Cited by 4 publications

(4 citation statements)

References 4 publications

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“…In all cultivars, the medium pH decreased from 4 to 24 h incubation. In an experiment of Rezaii et al (2010), the pH of in vitro medium declined through the first 24 h and then stabilized. There was a significant difference (P < 0.05) in vitro medium pH of barley grain cultivars at each incubation time, excepting the 16 h incubation.…”

Section: Resultsmentioning

confidence: 99%

Effect of climate on the in vitro first-order ruminal disappearance kinetics of dry matter in grain of semi-arid native barley cultivars

Ghezeljeh¹,

Mesgaran

Moghaddam³

et al. 2012

Afr. J. Agric. Res.

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An experiment was conducted to determine the in vitro first-order disappearance kinetics of dry matter in grain of six semi-arid native barley cultivars (Hordeum vulgare) adapted to grow at different climates known as cold (Bahman, Makoeei), moderate (Reyhan 03, Kavir) and hot (Dasht and Sahra). Samples (n=10) were assessed for bulk density (BD) and chemical composition. In addition, in vitro first-order kinetics of dry matter disappearance, medium pH and NH 3-N concentration were determined using fermentation culture. Data were fitted to an exponential equation model: D (t) = D (i) .exp (-k. time) + I; where D (t) was potentially a digestible residues at time t, D (i) was a potentially digestible fraction, k is a fractional rate constant of digestion (h-1) and I was an indigestible fraction. Results showed there was significant effect of adaption of varieties to climate on bulk density and crude protein, ash, NDF (neutral detergent fiber), ADF (acid detergent fiber), soluble sugars and starch concentrations in grain of the barley cultivars evaluated (P < 0.01). Barley grain cultivars from cold climate had the highest concentration of NDF and starch, whilst hot climate cultivars showed the highest amount of BD and CP (crude fiber). The amount of ash, ADF and soluble sugar in moderate climate barley grain cultivars was higher than those of the other climates. In vitro first order disappearance of dry matter was significantly (P < 0.01) influenced by the climate. Digestible fraction, fractional rate constant of digestion and indigestible fraction of grain from cold (0.78, 0.15, 0.146), moderate (0.77, 0.16, 0.157) and hot (0.75, 0.19, 0.206) were not similar in pattern. Dasht and Bahman grains had the highest and the lowest fractional rate constant (0.23 and 0.12 h-1 , respectively). Barley grain cultivars from cold and hot climates had the largest digestible fraction and fractional rate constant of digestion, respectively. The relationship between NDF content (g/kg DM) and fractional rate constant of digestion (X) was negative: NDF =-520.9X + 334.2, R 2 = 0.723. It was concluded that ruminal dry matter disappearance kinetic differences do exist between barley grains cultivars obtained from different climates.

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Section: Resultsmentioning

confidence: 99%

Effect of climate on the in vitro first-order ruminal disappearance kinetics of dry matter in grain of semi-arid native barley cultivars

Ghezeljeh¹,

Mesgaran

Moghaddam³

et al. 2012

Afr. J. Agric. Res.

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“…This is a novel approach that could potentially identify changes in the microbial structure. However, some of the results must be interpreted with care, since efficiency of utilization of a compound can change in presence of additional substrates ( Hall and Weimer, 2007 ; Rezaii et al, 2010 ), and with this approach we are assuming a similar efficiency of utilization between samples.…”

Section: Discussionmentioning

confidence: 99%

Functional Resilience and Response to a Dietary Additive (Kefir) in Models of Foregut and Hindgut Microbial Fermentation In Vitro

Fuente

Jones

Jones³

et al. 2017

Front. Microbiol.

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Stability in gut ecosystems is an important area of study that impacts on the use of additives and is related with several pathologies. Kefir is a fermented milk drink made with a consortium of yeast and bacteria as a fermentation starter, of which the use as additive in companion and livestock animals has increased in the last few years. To investigate the effect of kefir milk on foregut and hindgut digestive systems, an in vitro approach was followed. Either rumen fluid or horse fecal contents were used as a microbial inoculate and the inclusion of kefir (fresh, autoclaved, or pasteurized) was tested. Gas production over 72 h of incubation was recorded and pH, volatile fatty acids (VFAs), lactate and ammonia concentration as well as lactic acid (LAB) and acetic acid bacteria, and yeast total numbers were also measured. Both direct and indirect (by subtracting their respective blanks) effects were analyzed and a multivariate analysis was performed to compare foregut and hindgut fermentation models. Addition of kefir boosted the fermentation by increasing molar concentration of VFAs and ammonia and shifting the Acetate to Propionate ratio in both models but heat processing techniques like pasteurization or autoclaving influenced the way the kefir is fermented and reacts with the present microbiota. In terms of comparison between both models, the foregut model seems to be less affected by the inclusion of Kefir than the hindgut model. In terms of variability in the response, the hindgut model appeared to be more variable than the foregut model in the way that it reacted indirectly to the addition of different types of kefir.

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“…Selain kandungan LK, dalam biji tanaman juga banyak terkandung fraksi NFC. Hal yang kontradiktif dilaporkan oleh Rezaii et al (2010), dimana fraksi NFC memiliki efek negatif dalam menurunkan kecernaan selulosa yang terkandung dalam pakan. Pola negatif tersebut disebabkan oleh penurunan pH akibat proses fermentasi fraksi NFC.…”

Section: Hasil Dan Pembahasan Kandungan Nutrien Dan Fraksi Seratunclassified

Evaluasi Nutrien dan Kecernaan In Vitro Beberapa Spesies Rumput Lapangan Tropis di Indonesia

Wahyono¹,

Jatmiko²,

Firsoni³

et al. 2019

Si.Pet.

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Tujuan dari penelitian ini adalah untuk melakukan evaluasi nutrisi dan kecernaan in vitro pada sembilan spesies rumput lapangan tropis di Indonesia. Sampel rumput lapangan diperoleh dari kebun rumput Kawasan Nuklir Pasar Jumat, Jakarta Selatan dengan metode kuadrat. Peletakan plot dilakukan secara purposive sampling dengan jumlah 15 plot (ukuran 1 x 1 m). Sembilan spesies rumput lapangan yang dievaluasi termasuk dalam famili Poaceae dan Cyperaceae. Peubah yang diamati adalah kandungan nutrien, fraksi serat, estimasi kecernaan dan in vitro true digestibility (IVTD). Rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan empat pengulangan. Hasil penelitian menunjukkan bahwa Rumput Teki badot (Cyperus kyllinga) mengandung protein kasar (PK) tertinggi (7.60%). Rumput Teki badot juga mengandung kadar neutral detergent fiber (NDF) dan acid detergent fiber (ADF) terendah berturut-turut sebesar 66.10% dan 32.40% (P<0.05). Rumput Teki badot dan Rumput belulang (Eleusine indica) menghasilkan nilai relative feed value (RFV) tertinggi dan termasuk dalam kualitas hijauan "fair". Nilai IVTD tertinggi dihasilkan oleh Rumput Kusa-kusa (Echinochloa colonum) yaitu sebesar 66.62% (P<0.05). Rumput Kusa-kusa dan Rumput teki badot merupakan dua spesies rumput lapangan yang potensial dikembangkan secara genetik karena memiliki kandungan nutrien serta kecernaan in vitro yang lebih tinggi dibandingkan spesies rumput lapangan tropis lainnya.

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The effect of non-structural carbohydrate on in vitro first order disappearance kinetic of cellulose

Cited by 4 publications

References 4 publications

Effect of climate on the in vitro first-order ruminal disappearance kinetics of dry matter in grain of semi-arid native barley cultivars

Effect of climate on the in vitro first-order ruminal disappearance kinetics of dry matter in grain of semi-arid native barley cultivars

Functional Resilience and Response to a Dietary Additive (Kefir) in Models of Foregut and Hindgut Microbial Fermentation In Vitro

Evaluasi Nutrien dan Kecernaan In Vitro Beberapa Spesies Rumput Lapangan Tropis di Indonesia

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