scholarly journals In dairy cattle, the stomach tube method is not a feasible alternative to the rumen cannulation method to examine in vitro gas and methane production

2019 ◽  
Vol 256 ◽  
pp. 114259
Author(s):  
S. van Gastelen ◽  
F. Schumacher ◽  
J.W. Cone ◽  
J. Dijkstra ◽  
W.F. Pellikaan
Keyword(s):  
Dairy Cattle ◽  
Methane Production ◽  
Stomach Tube ◽  
Feasible Alternative

scholarly journals Supplementation of Red Betel Leaf (Piper crocatum) in Dairy Cattle Feed on Fermentation Characteristics by in Vitro

2016 ◽  
Vol 18 (2) ◽  
pp. 66
Author(s):  
Caribu Hadi Prayitno ◽  
Suwarno Suwarno ◽  
Doso Sarwanto ◽  
Dinar Hidayatun ◽  
Ma'ratul Solihah
Keyword(s):  
Organic Matter ◽  
Fatty Acid ◽  
Dairy Cattle ◽  
Methane Production ◽  
Gas Production ◽  
Betel Leaf ◽  
Cubic Curve ◽  
Organic Matter Digestibility ◽  
The Impact

The aim of this study was to assess the impact and efficiency of red betel leaf’s extract supplementation in the diet of dairy cattle on fermentation characteristics by in vitro.  The research method was experiment by using completely randomized design.  The treatments that were tested were R1: basal feed, R2:  R1 + 15 ppm of  red betel  leaf (Piper crocatum) extract, R3: R1 + 30 ppm of  red betel leaf (Piper crocatum) extract, R4: R1 + 45 ppm of red betel leaf (Piper crocatum) extract, R5: R1 + 60 ppm of red betel leaf (Piper crocatum) extract. The parameters measured in this study were (1)Dry MatterDigestibility (DMD),(2)Organic Matter Digestibility (OMD)  (3) total gas production  (4) methane production (CH4) and (5)  total Volatille Fatty Acid (VFA).  The data were analyzed using analysis of variance followed Orthogonal Polynomial Test.The results showed that the suplementation red batel extract in the diet of dairy cow was significant (P < 0.01) on DMD, OMD, total gas production, methane production (CH4)  and total VFA.Orthogonal Polynomial test showed the effect of treatment on Dry MatterDigestibility (DMD), total gas and CH4 gas production were in the form of cubic curve, as well as Organic Matter Digestibility (OMD) and Volatille Fatty Acid (VFA) in the form of quadrate curvewith supplementation of red betel leaf.  

scholarly journals Reducing enteric methane production from buffalo (Bubalus bubalis) by garlic oil supplementation in in vitro rumen fermentation system

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Avijit Dey ◽  
Shyam Sundar Paul ◽  
Puran Chand Lailer ◽  
Satbir Singh Dahiya
Keyword(s):  
Environmental Pollution ◽  
Methane Production ◽  
Rumen Fluid ◽  
Bubalus Bubalis ◽  
Rumen Fermentation ◽  
Acetyl Esterase ◽  
Garlic Oil ◽  
Enteric Methane ◽  
In Vitro Rumen Fermentation

AbstractEnteric methane production contributes significantly to the greenhouse gas emission globally. Although, buffaloes are integral part of livestock production in Asian countries, contributing milk, meat and draft power, the contribution of enteric methane to environmental pollution attracts attention. The present study investigated the efficacy of garlic (Allium sativum) oil in reducing enteric methane production from buffaloes (Bubalus bubalis) by in vitro rumen fermentation. Garlic oil (GOL) was tested at four concentrations [0 (Control), 33.33 µl (GOL-1), 83.33 µl (GOL-2) and 166.66 µl (GOL-3) per litre of buffered rumen fluid] in 100-ml graduated glass syringes and incubated at 39℃ for 24 h for in vitro rumen fermentation study. Supplementation of GOL-1 increased (p < 0.05) total gas production in comparison with GOL-3; however, it remained comparable (p > 0.05) with control and GOL-2. Graded doses of garlic oil inclusions reduced (p < 0.001) methane concentration (%) in total gas and total methane production (ml/g DM), irrespective of concentrations. The feed degradability, volatile fatty acids and microbial biomass production (MBP) were not affected (p > 0.05) by GOL-1, but these tended to decrease in GOL-2 with marked reduction (p < 0.01) in GOL-3. The decrease (p < 0.01) in NH3–N concentration in fermentation fluid in the presence of garlic oil, irrespective of concentration, suggests reduced deamination by inhibiting rumen proteolytic bacterial population. The activities of ruminal fibrolytic enzymes (CMCase, xylanase, β-glucosidase, acetyl esterase) were not affected by lower dose (GOL-1) of garlic oil; however, reduction (p < 0.05) of these enzymes activity in rumen liquor was evident at higher doses (GOL-2 and GOL-3) of supplementation. This study shows positive impact of garlic oil supplementation at low dose (33.33 µl/l of rumen fluid) in reducing enteric methane production, thereby, abatement of environmental pollution without affecting feed digestibility.

scholarly journals Chemical and phytochemical composition, in vitro ruminal fermentation, methane production, and nutrient degradability of fresh and ensiled Paulownia hybrid leaves

2021 ◽  
pp. 115038
Author(s):  
Haihao Huang ◽  
Malgorzata Szumacher-Strabel ◽  
Amlan Kumar Patra ◽  
Sylwester Ślusarczyk ◽  
Dorota Lechniak ◽  
...  
Keyword(s):  
Methane Production ◽  
Ruminal Fermentation ◽  
Phytochemical Composition

scholarly journals Influence of main dietary chemical constituents on the in vitro gas and methane production in diets for dairy cows

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Laura Maccarana ◽  
Mirko Cattani ◽  
Franco Tagliapietra ◽  
Lucia Bailoni ◽  
Stefano Schiavon
Keyword(s):  
Dairy Cows ◽  
Methane Production ◽  
Chemical Constituents

scholarly journals Effects of Methanogenic Inhibitors on Methane Production and Abundances of Methanogens and Cellulolytic Bacteria inIn VitroRuminal Cultures

2011 ◽  
Vol 77 (8) ◽  
pp. 2634-2639 ◽  
Author(s):  
Zhenming Zhou ◽  
Qingxiang Meng ◽  
Zhongtang Yu
Keyword(s):  
Methane Production ◽  
Volatile Fatty Acids ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Cellulolytic Bacteria ◽  
Bacterial Populations ◽  
Content Type ◽  
Specific Pcr ◽  
Methanogen Population ◽  
Propynoic Acid

ABSTRACTThe objective of this study was to systematically evaluate and compare the effects of select antimethanogen compounds on methane production, feed digestion and fermentation, and populations of ruminal bacteria and methanogens usingin vitrocultures. Seven compounds, including 2-bromoethanesulphonate (BES), propynoic acid (PA), nitroethane (NE), ethyltrans-2-butenoate (ETB), 2-nitroethanol (2NEOH), sodium nitrate (SN), and ethyl-2-butynote (EB), were tested at a final concentration of 12 mM. Ground alfalfa hay was included as the only substrate to simulate daily forage intake. Compared to no-inhibitor controls, PA, 2NEOH, and SN greatly reduced the production of methane (70 to 99%), volatile fatty acids (VFAs; 46 to 66%), acetate (30 to 60%), and propionate (79 to 82%), with 2NEOH reducing the most. EB reduced methane production by 23% without a significant effect on total VFAs, acetate, or propionate. BES significantly reduced the propionate concentration but not the production of methane, total VFAs, or acetate. ETB or NE had no significant effect on any of the above-mentioned measurements. Specific quantitative-PCR (qPCR) assays showed that none of the inhibitors significantly affected total bacterial populations but that they did reduce theFibrobacter succinogenespopulation. SN reduced theRuminococcus albuspopulation, while PA and 2NEOH increased the populations of bothR. albusandRuminococcus flavefaciens. Archaeon-specific PCR-denaturing gradient gel electrophoresis (DGGE) showed that all the inhibitors affected the methanogen population structure, while archaeon-specific qPCR revealed a significant decrease in methanogen population in all treatments. These results showed that EB, ETB, NE, and BES can effectively reduce the total population of methanogens but that they reduce methane production to a lesser extent. The results may guide futureinvivostudies to develop effective mitigation of methane emission from ruminants.

scholarly journals Physiology and Posttranscriptional Regulation of Methanol:Coenzyme M Methyltransferase Isozymes in Methanosarcina acetivorans C2A

2009 ◽  
Vol 191 (22) ◽  
pp. 6928-6935 ◽  
Author(s):  
Rina B. Opulencia ◽  
Arpita Bose ◽  
William W. Metcalf
Keyword(s):  
Methane Production ◽  
Posttranscriptional Regulation ◽  
Promoter Strength ◽  
Methanosarcina Acetivorans ◽  
Vitro Assay ◽  
Phenotypic Differences ◽  
Fusion Data ◽  
Encoding Genes ◽  
Similar Growth

ABSTRACT Methanosarcina species possess three operons (mtaCB1, mtaCB2, and mtaCB3) encoding methanol-specific methyltransferase 1 (MT1) isozymes and two genes (mtaA1 and mtaA2) with the potential to encode a methanol-specific methyltransferase 2 (MT2). Previous genetic studies showed that these genes are differentially regulated and encode enzymes with distinct levels of methyltransferase activity. Here, the effects of promoter strength on growth and on the rate of methane production were examined by constructing strains in which the mtaCB promoters were exchanged. When expressed from the strong PmtaC1 or PmtaC2 promoter, each of the MtaC and MtaB proteins supported growth and methane production at wild-type levels. In contrast, all mtaCB operons exhibited poorer growth and lower rates of methane production when PmtaC3 controlled their expression. Thus, previously observed phenotypic differences can be attributed largely to differences in promoter activity. Strains carrying various combinations of mtaC, mtaB, and mtaA expressed from the strong, tetracycline-regulated PmcrB(tetO1) promoter exhibited similar growth characteristics on methanol, showing that all combinations of MtaC, MtaB, and MtaA can form functional MT1/MT2 complexes. However, an in vitro assay of coupled MT1/MT2 activity showed significant variation between the strains. Surprisingly, these variations in activity correlated with differences in protein abundance, despite the fact that all the encoding genes were expressed from the same promoter. Quantitative reverse transcriptase PCR and reporter gene fusion data suggest that the mtaCBA transcripts show different stabilities, which are strongly influenced by the growth substrate.

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