613 Humic substances supplementation reduces ruminal methane production and increases the efficiency of microbial protein synthesis in vitro

This study evaluated the effect of different roughages fed to sheep on nutrient and water intake, ingestive behavior, nitrogen balance, microbial protein synthesis, fermentation parameters, and methane production using an in vitro gas production system. The treatments consisted of five diets: cactus cladodes Nopalea (NUB) and Opuntia (OUB), both with the addition of sugarcane bagasse (SB) and urea/ammonium sulfate (urea/as); Tifton hay (TH); corn silage (CS); and sorghum silage (SS), also with added urea/as. The NUB provided greater (p ≤ 0.03) intakes of dry matter (1024 g/d), digestible organic matter (670 g/d), and crude protein (161 g/d) than those on the SS. The NUB provided greater (p < 0.01) dietary water intake (3023 g/d) than TH. The time spent on rumination was shorter (p < 0.01), and the idle time was longer in animals fed NUB and OUB than TH and CS. Microbial protein synthesis was not affected (p = 0.27). The final pH (6.4) of the incubation fluid and the concentration of NH3-N (39.05 mg/dL) were greater for NUB and OUB. Ruminal parameters and methane production were little or not affected by tested forages. We recommend using cactus cladodes in combination with sugarcane bagasse and urea/as in sheep diets.

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Dose-response effects of the Savory (Satureja khuzistanica) essential oil and extract on rumen fermentation characteristics, microbial protein synthesis and methane production in vitro

Annals of Animal Science ◽

10.2478/aoas-2021-0084 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Mostafa Mehdipour Golbotteh ◽

Mostafa Malecky ◽

Hasan Aliarabi ◽

Pouya Zamani ◽

Mehdi Ganjkhanlou

Keyword(s):

Protein Synthesis ◽

Essential Oil ◽

Dose Response ◽

Methane Production ◽

Rumen Fermentation ◽

Feed Additives ◽

High Dose ◽

Microbial Protein ◽

Microbial Protein Synthesis

Abstract The objective of the present study was to investigate dose-response effects of the essential oil (EO) and dry extract (EX) of Satureja khuzistanica (SK) on in vitro gas production kinetics, rumen fermentation, ruminal methanogenesis and microbial protein synthesis. So, EO and EX were tested at 0 (as control); 150 (low dose); 300, 450 (intermediate doses) and 600 mg/L (high dose). The gas produced over 24 h of incubation (GP24) decreased linearly with both EO and EX dosages (P<0.01). In vitro methane production was reduced by both EO (14–69%, depending on the included dose) and EX (7–58%). Microbial protein (MP) as well as the efficiency of microbial protein synthesis (EMPS) were improved by EO (18.8–49.8% and 20.4–61.5% for MP and EMPS, respectively) and to a lesser extent by EX (8.3–25.7% and 4.6–24.2% for MP and EMPS, respectively). Ammonia concentration was dropped in linear and quadratic manners with EO (P<0.05), and linearly with EX dosages (P<0.01). EO and EX exhibited depressive effects (in linear and quadratic (P<0.05), and linear manners (P<0.01), respectively) on total protozoa count. A mixed linear and quadratic effect was observed from both EO and EX on total VFA concentration (P<0.01). Total VFA concentration increased at 300 mg/L of EX, but decreased at high dose of both EO and EX. The acetate proportion increased with EO intermediate and high dosages, but it decreased at the expense of propionate at low and intermediate doses of EX. In total, these findings confirmed previous research on the great capacity of plant-based feed additives in positively modulating rumen fermentation that their effects may vary depending on the used doses. Specifically, these results suggest that EO and EX have high potentials to improve rumen functions at intermediate doses, which needs to be confirmed by in vivo experiments.

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Effect of microbial isolates on microbial yield estimation in RUSITEC system

BSAP Occasional Publication ◽

10.1017/s0263967x0003295x ◽

1998 ◽

Vol 22 ◽

pp. 306-308

Author(s):

M. D. Carro ◽

E. L. Miller

Keyword(s):

Protein Synthesis ◽

Liquid Phase ◽

Solid Phase ◽

Liquid Fraction ◽

Microbial Protein ◽

Microbial Protein Synthesis ◽

Continuous Culture System ◽

The One

The estimation of rumen microbial protein synthesis is one of the main points in the nitrogen (N)-rationing systems for ruminants, as microbial protein provides proportionately 0.4 to 0.9 of amino acids entering the small intestine in ruminants receiving conventional diets (Russell et al., 1992). Methods of estimating microbial protein synthesis rely on marker techniques in which a particular microbial constituent is related to the microbial N content. Marker : N values have generally been established in mixed bacteria isolated from the liquid fraction of rumen digesta and it has been assumed that the same relationship holds in the total population leaving the rumen (Merry and McAllan, 1983). However, several studies have demonstrated differences in composition between solid-associated (SAB) and fluid-associated bacteria in vivo (Legay-Carmier and Bauchart, 1989) and in vitro (Molina Alcaide et al, 1996), as well in marker : N values (Pérez et al., 1996). This problem could be more pronounced in the in vitro semi-continuous culture system RUSITEC, in which there are three well defined components (a free liquid phase, a liquid phase associated with the solid phase and a solid phase), each one having associated microbial populations.The objective of this experiment was to investigate the effect of using different bacterial isolates (BI) on the estimation of microbial production of four different diets in RUSITEC (Czerkawski and Breckenridge, 1977), using (15NH4)2 SO4 as microbial marker, and to assess what effects any differences would have on the comparison of microbial protein synthesis between diets.This study was conducted in conjunction with an in vitro experiment described by Carro and Miller (1997). Two 14-day incubation trials were carried out with the rumen simulation technique RUSITEC (Czerkawski and Breckenridge, 1977). The general incubation procedure was the one described by Czerkawski and Breckenridge (1977) and more details about the procedures of this experiment are given elsewhere (Carro and Miller, 1997).

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Produk Fermentasi Rumen dan Produksi Protein Mikroba Sapi Lokal yang Diberi Pakan Jerami Amoniasi dan Beberapa Bahan Pakan Sumber Energi

Jurnal Agripet ◽

10.17969/agripet.v11i2.371 ◽

2011 ◽

Vol 11 (2) ◽

pp. 29-34 ◽

Cited By ~ 2

Author(s):

Novita Hindratiningrum ◽

Muhamad Bata ◽

Setya Agus Santosa

Keyword(s):

Protein Synthesis ◽

Rice Bran ◽

Volatile Fatty Acids ◽

Rumen Fluid ◽

Gas Production ◽

Metabolic Energy ◽

Energy Sources ◽

Microbial Protein ◽

Microbial Protein Synthesis

Products of rumen fermentation and protein microbial of dairy cattle feed with rice bran ammonization and some feedstuffs as an energy sourcesABSTRACT. This study aims to examine the energy sources of feed ingredients that can increase the production of Volatile Fatty Acids (VFA), N-NH3, microbial protein synthesis, total gas production and metabolic energy. The material used is as a source of rumen fluid inoculum from Frisian Holstein cows (FH) females, amoniasi rice straw, salt, mineral mix brand "Ultra Minerals' production Eka Farma Semarang, onggok wet and dry, corn, and rice bran. Observed variable is the concentration of (VFA), N-NH3, rumen microbial protein synthesis, and total gas production. Based on the analysis of diversity seen any significant effect (P0.05) on total VFA concentration, N-NH3 and total gas but had no effect (P0.05) on microbial protein synthesis. Conclusion of research is the provision of energy sources with rice bran treatment, onggok wet and dry corn flour can be used as fermentable carbohydrates on feed hay amoniasi in vitro.

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Soluble Rumen Liquor Lignin Hemicellulose: Composition and Influence on In Vitro Rumen Microbial Protein Synthesis

Journal of Animal Science ◽

10.2527/jas1979.491163x ◽

1979 ◽

Vol 49 (1) ◽

pp. 163-168 ◽

Cited By ~ 1

Author(s):

J. E. Williams ◽

G. A. McLaren ◽

T. R. Smith ◽

G. C. Fahey

Keyword(s):

Protein Synthesis ◽

Microbial Protein ◽

Microbial Protein Synthesis

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PENGARUH DAUN TURI (Sesbania grandiflora) DAN LAMTORO (Leucaena leucocephala) DALAM RANSUM SAPI BERBASIS INDEKS SINKRONISASI PROTEIN - ENERGI TERHADAP SINTESIS PROTEIN MIKROBA RUMEN

Pastura ◽

10.24843/pastura.2017.v06.i02.p01 ◽

2019 ◽

Vol 6 (2) ◽

pp. 47

Author(s):

Afduha Nurus Syamsi ◽

Fransisca Maria Suhartati ◽

Wardhana Suryapratama

Keyword(s):

Protein Synthesis ◽

Rumen Fluid ◽

Microbial Protein ◽

In Vitro Techniques ◽

Microbial Protein Synthesis ◽

Sesbania Grandiflora ◽

Protein Energy ◽

Randomized Design ◽

Better Than

An experiment was aimed to assess the use of the legume leaf as a source of protein feedstuff and levels of synchronization protein-energy (SPE) index in the diet of cattles on ammonia (N-NH3) and microbial protein synthesis (MPS). In vitro techniques was done. The research was used a completely randomized design (CRD), with factorially pattern (2x3), the first factor was the two species of legume (Sesbania leaves and Leucaena leaves) and the second factor was the three level of the SPE index (0.4, 0.5, and 0.6), there were 6 treatment combinations and each was 4 replicates. The results showed that no interaction between legume with SPE index, but each factor was significantly effect (P<0.05) on N-NH3 of rumen fluid and MPS. The research concluded that Leucaena leaf is a legume that is better than Sesbania leaf in terms of their ability toincrease MPS. SPE index is the best in producing MPS at level 0.6. Key words: Legume, synchronization of protein and energy index, ammonia, microbial protein synthesis

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The effects of rumen nitrogen balance on in vitro rumen fermentation and microbial protein synthesis vary with dietary carbohydrate and nitrogen sources

Animal Feed Science and Technology ◽

10.1016/j.anifeedsci.2018.05.005 ◽

2018 ◽

Vol 241 ◽

pp. 184-197 ◽

Cited By ~ 9

Author(s):

D. Kand ◽

I. Bagus Raharjo ◽

J. Castro-Montoya ◽

U. Dickhoefer

Keyword(s):

Protein Synthesis ◽

Nitrogen Balance ◽

Nitrogen Sources ◽

Rumen Fermentation ◽

Dietary Carbohydrate ◽

Microbial Protein ◽

Microbial Protein Synthesis ◽

Rumen Nitrogen ◽

In Vitro Rumen Fermentation

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Effect of banana flower powder on rumen fermentation, synthesis of microbial protein and nutrient digestibility in swamp buffaloes

Animal Production Science ◽

10.1071/an18063 ◽

2019 ◽

Vol 59 (9) ◽

pp. 1674 ◽

Cited By ~ 1

Author(s):

Metha Wanapat ◽

Thiwakorn Ampapon ◽

Kampanat Phesatcha ◽

Sungchhang Kang

Keyword(s):

Fatty Acids ◽

Protein Synthesis ◽

Rice Straw ◽

Methane Production ◽

Volatile Fatty Acids ◽

Nutrient Digestibility ◽

Microbial Protein ◽

Microbial Protein Synthesis ◽

Ruminal Ph ◽

Banana Flower

Replacement of chemical compounds by dietary sources as rumen enhancers have been of great interest and concern by researchers. Four, rumen-fistulated swamp buffalo bulls with average liveweight of 365 ± 15.0 kg were randomly assigned to treatments, to investigate the impact of banana flower powder (BAFLOP) as a rumen modifier on pH, rumen fermentation, nutrient digestibility, microbial protein synthesis and volatile fatty acids. All buffaloes were allotted according to a 4 × 4 Latin square design. Dietary supplementation treatments were as follows: 2 g concentrate/kg bodyweight (BW; T1), 15 g concentrate/kg BW (T2), 15 g concentrate/kg BW plus BAFLOP 300 g/head.day (T3) and 15 g concentrate/kg BW plus BAFLOP 600 g/head.day (T4). Untreated rice straw was fed ad libitum. The findings showed that total feed intake was increased in buffaloes fed a diet supplemented with concentrate at 2 g/kg BW, while rice straw intake was reduced. Nutrient digestibility was increased by BAFLOP supplementation at both levels (T3 and T4; P < 0.05). Ruminal pH dropped (5.9) in buffaloes fed with concentrate at 15 g/kg BW, while buffaloes with BAFLOP supplementation could maintain ruminal pH when fed with high-concentrate diet. Ruminal ammonia-nitrogen increased in the buffaloes fed concentrate at 15 g/kg BW, especially with BAFLOP supplementation. Feeding high-concentrate diet increased the concentrations of ruminal total volatile fatty acids and propionic acid (C3), while the concentration of acetic acid and the acetic acid:C3 ratio and methane production were subsequently reduced (P < 0.05). In addition, efficiency of microbial protein synthesis was increased by the BAFLOP feeding (P < 0.05). In the present study, using BAFLOP as a dietary rumen enhancer at 300–600 g/head.day resulted in an increased rumen pH, C3 concentration, nutrient digestibility and microbial protein synthesis, while mitigating ruminal methane production. Higher nutrient digestibility and lower ruminal methane production, more dietary energy and production efficiency are expected.

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Dynamics of large ciliate protozoa in the rumen of cattle fed on diets of freshly cut grass

British Journal Of Nutrition ◽

10.1079/bjn19860125 ◽

1986 ◽

Vol 56 (2) ◽

pp. 455-462 ◽

Cited By ~ 18

Author(s):

R. A. Leng ◽

D. Dellow ◽

G. Waghorn

Keyword(s):

Protein Synthesis ◽

Production Rate ◽

Small Proportion ◽

Turnover Rate ◽

Turnover Time ◽

Microbial Protein ◽

Microbial Protein Synthesis ◽

Lysis Rate ◽

Ciliate Protozoa

1. The dynamics of large ciliate (holotrich) protozoa (Isotricha and Dasytricha spp.) in the rumen of cattle given cut, fresh ryegrass (Lolium multiflorium Lam) were studied by means of a single intrarumen injection of14C-labelled protozoa prepared in vitro by adding [Me14C]choline to rurnen fluid containing protozoa and incubating at 39° for 2 h.2. An indication of the lysis rate of protozoa in the rumen was obtained from the radioactivity apparently lost through the methane pool.3. The turnover time of the holotrich protozoa indicates that these protozoa were extensively retained in the rumen and that only a small proportion of those produced in the rumen flowed out in the digesta. This was supported by the estimation of the rate of lysis which was approximately 85% of the turnover rate in the rurnen.4. The apparent production rate of the larger protozoa indicates that they contribute only about 9% of the predicted net microbial protein synthesis in the rumen.

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Effects of Starch Content on Hydrogen and Methane Productions, Rumen Fermentation and Microbial Protein Synthesis During in Vitro Ruminal Culture

10.21203/rs.3.rs-808694/v1 ◽

2021 ◽

Author(s):

Siyu Yi ◽

Xiumin Zhang ◽

Min Wang ◽

Caixia Zou ◽

Xuezong Chen ◽

...

Keyword(s):

Protein Synthesis ◽

Starch Content ◽

Rumen Fermentation ◽

Hydrogen Gas ◽

Microbial Protein ◽

Corn Straw ◽

Molar Percentage ◽

Microbial Protein Synthesis ◽

Corn Grain

Abstract Background: Starch has faster rate of rumen fermentation than fiber, and always causes a rapid increase in ruminal molecular hydrogen (H2) partial pressure and microbial protein synthesis, which may promote other H2 sinks to compete H2 from methanogenesis. The study was designed to investigate the effects of increasing starch content on methane (CH4), hydrogen gas (gH2) production, rumen fermentation, metabolic hydrogen ([H]) production, microbial protein (MCP) synthesis through in vitro ruminal batch incubation. Methods: Seven different treatments was prepared by replacing corn straw with corn grain, and starch content were 72, 185, 297, 410, 525, 634 and 747 g/kg DM.Results: Elevating starch content increased DM degradation (Plinear < 0.001), and decreased the CH4 (Plinear and Pquadratic < 0.001) and gH2 (Plinear < 0.001) productions relative to DM degraded. Elevating starch content increased VFA concentration (Plinear < 0.001), propionate molar percentage (Plinear < 0.001; Pquadratic = 0.001) and MCP concentration (Plinear and Pquadratic < 0.001), and decreased acetate molar percentage (Plinear < 0.001), acetate to propionate ratio (Plinear < 0.001) and estimated net [H] production relative to DM degraded (Plinear < 0.001). Elevating starch content decreased molar percentage of [H] utilized for CH4 (Pquadratic = 0.003) and gH2 (Plinear < 0.001) production. Conclusion: Increasing starch content alters rumen fermentation pathway from acetate to propionate production with reduction in efficiency of [H] production, promotes H2 utilization with enhanced MCP synthesis and leads to the reduction in efficiency of CH4 and gH2 production.

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