In vitro fermentation and microbial protein synthesis of some browse tree leaves with or without addition of polyethylene glycol

Salem, Abdelfattah Z.M.; Robinson, P.H.; El-Adawy, M. M.; Hassan, A. A.

doi:10.1016/j.anifeedsci.2006.11.026

Cited by 39 publications

(48 citation statements)

References 41 publications

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“…This may tend to reduce the microbial growth and enzyme activity [44] or intestinal bacterial activity [45]. A decrease in rate and extent of gas production of some shrubs due to their high contents of lignin and tannins through increasing the adverse environmental conditions as incubation time progressed was observed [46]. This is consistent with De Boever et al [47] who reported that gas production was negatively related to NDF content and positively with starch.…”

Section: Discussionsupporting

confidence: 81%

“…Similar observations were reported by Nordheim-Viken and Volden, [48,49]. McAllister et al [50] also observe that higher NDF and lignifications and/or higher ADF/NDF proportion and free-CT contents can reduce attachment of ruminal microbes to feed particles, as well as inhibit microbial growth and enzyme activity [44] or intestinal bacterial activity [46] by free-condensed tannins and hence lead to lower gas production.…”

Section: Discussionsupporting

confidence: 73%

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In Sacco and In Vitro Organic Matter Degradability (OMD) Of Selected Semi Arid Browse Forages

Njidda¹

2013

IOSR-JAVS

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Section: Discussionsupporting

confidence: 81%

Section: Discussionsupporting

confidence: 73%

In Sacco and In Vitro Organic Matter Degradability (OMD) Of Selected Semi Arid Browse Forages

Njidda¹

2013

IOSR-JAVS

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“…Los efectos positivos del PEG sobre A. amentacea o P. texana podrían indicar incrementos en la disponibilidad de nutrientes y, por tanto, una mayor actividad microbial en el rumen del venado cola blanca consumiendo estas arbustivas forrajeras (Rubanza et al, 2003;Motubatse et al, 2008). Además, las correlaciones positivas entre los TC y los parámetros de producción de gas in vitro y el mejoramiento generalizado en la fermentación de A. amentacea o P. texana debido a la adición de PEG, ciertamente refleja la desactivación de los TC (Makkar, 2005;Salem, 2005;Salem et al, 2007).…”

Section: Chemical Compositionunclassified

“…El mejoramienindicate enhancements in nutrient availability and thus, a greater microbial activity in rumen of white-tailed deer consuming these shrubs (Rubanza et al, 2003;Motubatse et al, 2008). Moreover, the positive correlation coefficients between CT and in vitro gas production parameters and the general improvement in fermentation in A. amentacea and P. texana by adding PEG certainly reflects the deactivation of condensed tannins (Makkar, 2005;Salem et al, 2007).…”

Section: Conclusiónmentioning

confidence: 99%

INFLUENCIA DEL POLIETILÉN GLICOL SOBRE LOS PARÁMETROS DE PRODUCCIÓN DE GAS in vitro EN CUATRO FORRAJERAS NATIVAS CONSUMIDAS POR EL VENADO COLA BLANCA

Domínguez-Gómez¹,

González‐Rodríguez²,

Guerrero-Cervantes³

et al. 2011

Rev Cha Se Cie For y del Amb

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.mx ( ¶ Autor para correspondencia). RESUMENLa composición química y la fermentación in vitro se determinó en hojas tratadas con y sin polietilén glicol (PEG), de arbustivas nativas del noreste de México como: Acacia amentacea, Celtis pallida, Forestiera angustifolia y Parkinsonia texana colectadas en agostaderos manejados sin disturbio. Las colectas se realizaron en enero y abril de 2009 en tres municipios (China, Linares y Los Ramones) del estado de Nuevo león, México. La composición química y la cinética de la fermentación in vitro variaron ampliamente entre sitios, plantas y entre muestreos dentro de especies. Sólo A. amentacea (18 %) y P. texana (8 %), que tuvieron alto contenido de taninos condensados (TC), aumentaron significativamente los parámetros de producción de gas y la energía metabolizable (EM) después del tratamiento con PEG. Celtis pallida y F. angustifolia tuvieron el más bajo contenido de lignina (LDA) y TC; sin embargo, C. pallida resultó con la más alta fermentación in vitro. Lo anterior se podría explicar por diferencias entre arbustivas respecto a las características genéticas relacionadas con la actividad de los metabolitos secundarios de las plantas. Todas las plantas tuvieron alto valor nutricional para el venado cola blanca debido a que su aparato digestivo tiene mecanismos para neutralizar TC. ABSTRACTThe chemical composition and the in vitro fermentation in leaves, treated with or without polyethylene glycol (PEG), of native shrub from northeastern Mexico, such as: Acacia amentacea, Celtis pallida, Forestiera angustifolia and Parkinsonia texana were established. These shrubs were gathered from fields without any disturbance. Leaves were collected at two sampling times (January and April, 2009) in three municipalities (China, Linares and Los Ramones) of the state of Nuevo Leon, Mexico. A wide range in chemical composition and in vitro gas production kinetics was observed among sites, species and sampling times of each species. A. amentacea (CT = 18 %) and P. texana (8 %), which had a higher condensed tannins content (CT), significantly increased the in vitro gas production parameters and the metabolizable energy after a treatment with PEG. Celtis pallida had the highest in vitro fermentation parameters due to the lower levels of lignin (ADL) and CT. Some variation was observed among shrubs such as in F. angustifolia that had lower fermentation and lower ADL and CT. This discrepancy could be due to genotypic characteristics relative to the type of plant secondary compounds activity. All plants resulted with high nutritional value for white-tailed deer knowing that deer have digestive mechanisms to neutralize CT. PALABRAS CLAVE:Acacia amentacea, Celtis pallida, Forestiera angustifolia, Parkinsonia texana, composición quími-ca, fermentación ruminal.

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“…Residues were centrifuged at 12 000 )g for 20 min at 48C (Sorvall RC-6 plus centrifuge, Thermo Fisher Scientific, Osterode, Germany) (Salem et al 2007). The supernatant was acidified with 4 M HCl and conserved at (208C for further analysis.…”

Section: Residue Handlingmentioning

confidence: 99%

Effect of glycerol in combination with alfalfa on in vitro gas production and microbial protein synthesis

Alfonso-ÁvilaÁ.¹,

Charbonneau²,

LafrenièreC.³

et al. 2015

Can. J. Anim. Sci.

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Alfonso-Á vila, Á . R., Charbonneau, E., Lafrenie`re, C. and Berthiaume, R. 2015. Effect of glycerol in combination with alfalfa on in vitro gas production and microbial protein synthesis. Can. J. Anim. Sci. 95: 577Á588. This study sought to determine the effect of added glycerol on microbial protein synthesis, ruminal degradation and utilization of alfalfa at different concentrations of nonstructural carbohydrates (NSC), using in vitro gas production. The 2 )3 factorial plus one treatment consisted of oven-dried alfalfa with two NSC levels [high: 17.9 (HNSC) or low: 7.4% dry matter (DM) (LNSC)] and three glycerol treatments [control without glycerol, 15% crude glycerol (CG) and 15% pure glycerol (PG)], the additional treatment was LNSC'exogenous sugars (LNSC'ES: LNSC with 5% sucrose'5% starch). Five pre-planned contrasts were evaluated from the seven treatments: (1) HNSC vs. LNSC alfalfa; (2) with glycerol vs. without; (3) interaction of alfalfa and glycerol; (4) CG vs. PG, and; (5) LNSC'ES vs. HNSC. Gas production over 24 h was higher for HNSC than LNSC (202 vs. 179 mL g(1 DM) and with glycerol than without glycerol (202.2 vs. 168 mL g (1 DM). A decrease in the acetate:propionate ratio was observed for HNSC compared with LNSC (2.87 vs. 3.27) and for the addition of glycerol vs. no glycerol (2.78 vs. 3.65). Reduced microbial mass (185.5 vs. 240.5 mg g(1 DM) was observed for CG compared with PG. The LNSC'ES treatment had lower microbial protein synthesis and propionic acid production in relation to HNSC. No significant interaction was observed between the effect of NSC content of alfalfa and glycerol utilization. When effects were studied separately, results indicate that increasing NSC in alfalfa stimulates the synthesis of microbial protein. Also, the addition of glycerol promotes the synthesis of glucose precursors. Finally, the type of glycerol has an impact on results obtained suggesting caution when extrapolating results for PG to CG.

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In vitro fermentation and microbial protein synthesis of some browse tree leaves with or without addition of polyethylene glycol

Cited by 39 publications

References 41 publications

In Sacco and In Vitro Organic Matter Degradability (OMD) Of Selected Semi Arid Browse Forages

In Sacco and In Vitro Organic Matter Degradability (OMD) Of Selected Semi Arid Browse Forages

INFLUENCIA DEL POLIETILÉN GLICOL SOBRE LOS PARÁMETROS DE PRODUCCIÓN DE GAS in vitro EN CUATRO FORRAJERAS NATIVAS CONSUMIDAS POR EL VENADO COLA BLANCA

Effect of glycerol in combination with alfalfa on in vitro gas production and microbial protein synthesis

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