Impacts of herbage mass and sward allowance of perennial ryegrass sampled throughout the growing season on in vitro rumen methane production

2011 ◽  
Vol 166-167 ◽  
pp. 405-411 ◽  
Author(s):  
P.J. Purcell ◽  
M. O’Brien ◽  
T.M. Boland ◽  
M. O’Donovan ◽  
P. O’Kiely
Keyword(s):  
Perennial Ryegrass ◽  
Methane Production ◽  
Growing Season

Seasonal variation in in vitro methane production of two perennial ryegrass cultivars

2003 ◽  
Vol 2003 ◽  
pp. 158-158
Author(s):  
D. K. Lovett ◽  
A. Bortolozzo ◽  
D. McGilloway ◽  
F. P. O’Mara
Keyword(s):  
Seasonal Variation ◽  
Perennial Ryegrass ◽  
Methane Production ◽  
Heading Date ◽  
Harvest Date ◽  
Cultivar Selection

Previous studies have identified small but significant differences in in vitro methane (CH4) production between perennial ryegrass cultivars harvested pre-heading date. This raises the possibility that enteric CH4 production could be reduced through cultivar selection. The aim of this study was to assess the effect of harvest date on in vitro CH4 output of two cultivars previously identified as having a high and low methanogenic potential (Lovett et al., 2003).

In vitro rumen methane output of perennial ryegrass varieties and perennial grass species harvested throughout the growing season

2012 ◽  
Vol 67 (2) ◽  
pp. 280-298 ◽  
Author(s):  
P. J. Purcell ◽  
M. O’Brien ◽  
A. Navarro-Villa ◽  
T. M. Boland ◽  
M. McEvoy ◽  
...  
Keyword(s):  
Perennial Ryegrass ◽  
Perennial Grass ◽  
Growing Season ◽  
Grass Species

Nutritive value, in vitro fermentation and methane production of perennial pastures as affected by botanical composition over a growing season in the south of Chile

2014 ◽  
Vol 54 (5) ◽  
pp. 598 ◽  
Author(s):  
J. P. Keim ◽  
I. F. López ◽  
R. Berthiaume
Keyword(s):  
Organic Matter ◽  
Methane Production ◽  
Growing Season ◽  
Gas Production ◽  
Botanical Composition ◽  
The South ◽  
In Vitro Fermentation ◽  
Fermentation Products ◽  
Microbial N

Permanent pastures have been shown to produce similar herbage masses and nutrient contents to perennial ryegrass pastures. To the best of our knowledge, little research has been conducted on the ruminal fermentation of permanent pastures. Our objective was to evaluate the effect of botanical composition of four perennial pastures during a growing season in the south of Chile [winter, September 2010 ‘S1’; spring, November 2010 ‘S2’; and summer, January 2011 ‘S3’]: on in vitro fermentation products using a batch culture system. The perennial pastures studied included: permanent (PP), permanent fertilised (PFP) and renovated pastures (Lolium perenne and Trifolium repens pasture ‘RGWC’; Bromus valdivianus, Dactylis glomerata, Holcus lanatus, L. perenne and T. repens ‘MIXED’). There were strong interactions between pasture type and regrowth period for true organic matter, nitrogen (N) and neutral detergent fibre digestibility; total gas and volatile fatty acid (VFA) production; ammonia and microbial N. In general, all pasture treatments showed a high true organic matter digestibility (>800 g/kg), and tended to decrease in S3. In vitro fermentation of PFP and RGWC produced the highest total VFA concentration during S1 and S2, and no differences among pastures were observed in summer. Propionate proportion of total VFA was affected by pasture type and regrowth period, being higher for RGWC and S1, respectively. In vitro microbial N was higher for MIXED in S1, and PFP in S2 and S3. No pasture and regrowth period effects were observed for methane production and its proportion of total gas production. These results indicate that the in vitro fermentation products of a permanent fertilised pasture reach similar levels to those obtained from a sown pasture, and thus may be considered as a sustainable alternative for grazing livestock systems.

In vitro methane production of different cultivars of perennial ryegrass

2003 ◽  
Vol 2003 ◽  
pp. 162-162
Author(s):  
D. K. Lovett ◽  
D. McGilloway ◽  
A. Bortolozzo ◽  
F. P. O’Mara
Keyword(s):  
Perennial Ryegrass ◽  
Methane Production ◽  
Production Systems ◽  
Livestock Production ◽  
Supplementary Feeding ◽  
High Utilization

Irish livestock production systems are characterised by the high utilization of grazed grass combined with minimal supplementary feeding. As such the options to reduce methane (CH4) production, particularly for beef animals, is limited to the finishing period when diet can be controlled and varied. No data is available regarding the methanogenic potential of differing grass cultivars. This study assessed CH4 output, as measured in vitro, of six ryegrass cultivars, with the aim of quantifying the potential for enteric CH4 emissions to be reduced from ruminants grazing ryegrass dominant swards.

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
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