Individual-level correlations of rumen volatile fatty acids with enteric methane emissions for ranking methane yield in sheep fed fresh pasture

2020 ◽  
Author(s):  
Arjan Jonker ◽  
Sharon Hickey ◽  
Paul Boma ◽  
Chernet Woyimo Woju ◽  
Edgar Sandoval ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Methane Emissions ◽  
Methane Yield ◽  
Individual Level ◽  
Enteric Methane ◽  
Enteric Methane Emissions

Forage brassica: a feed to mitigate enteric methane emissions?

2016 ◽  
Vol 56 (3) ◽  
pp. 451 ◽  
Author(s):  
Xuezhao Sun ◽  
David Pacheco ◽  
Dongwen Luo
Keyword(s):  
Methane Emissions ◽  
Methane Yield ◽  
Forage Crops ◽  
Enteric Methane ◽  
Winter Crop ◽  
Feeding Trials ◽  
Series Of Experiments ◽  
Forage Rape ◽  
Pastoral Farming ◽  
Enteric Methane Emissions

A series of experiments was conducted in New Zealand to evaluate the potential of forage brassicas for mitigation of enteric methane emissions. Experiments involved sheep and cattle fed winter and summer varieties of brassica forage crops. In the sheep-feeding trials, it was demonstrated that several species of forage brassicas can result, to a varying degree, in a lower methane yield (g methane per kg of DM intake) than does ryegrass pasture. Pure forage rape fed as a winter crop resulted in 37% lower methane yields than did pasture. Increasing the proportion of forage rape in the diet of sheep fed pasture linearly decreased methane yield. Feeding forage rape to cattle also resulted in 44% lower methane yield than did feeding pasture. In conclusion, reductions in methane emission are achievable by feeding forage brassicas, especially winter forage rape, to sheep and cattle. Investigating other aspects of these crops is warranted to establish their value as a viable mitigation tool in pastoral farming.

scholarly journals Individual milk fatty acids are potential predictors of enteric methane emissions from dairy cows fed a wide range of diets: Approach by meta-analysis

2019 ◽  
Vol 102 (11) ◽  
pp. 10616-10631 ◽  
Author(s):  
A. Bougouin ◽  
J. A. D. Ranga Niroshan Appuhamy ◽  
A. Ferlay ◽  
E. Kebreab ◽  
C. Martin ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Meta Analysis ◽  
Methane Emissions ◽  
Milk Fatty Acids ◽  
Wide Range ◽  
Enteric Methane ◽  
Enteric Methane Emissions

scholarly journals Reducing the carbon footprint of Australian milk production by mitigation of enteric methane emissions

2016 ◽  
Vol 56 (7) ◽  
pp. 1017 ◽  
Author(s):  
Peter J. Moate ◽  
Matthew H. Deighton ◽  
S. Richard O. Williams ◽  
Jennie E. Pryce ◽  
Ben J. Hayes ◽  
...  
Keyword(s):  
Milk Production ◽  
Carbon Footprint ◽  
Dairy Industry ◽  
Methane Emissions ◽  
Dietary Lipid ◽  
Methane Yield ◽  
Cow Milk ◽  
Feed Conversion ◽  
Enteric Methane ◽  
Enteric Methane Emissions

This review examines research aimed at reducing enteric methane emissions from the Australian dairy industry. Calorimeter measurements of 220 forage-fed cows indicate an average methane yield of 21.1 g methane (CH4)/kg dry matter intake. Adoption of this empirical methane yield, rather than the equation currently used in the Australian greenhouse gas inventory, would reduce the methane emissions attributed to the Australian dairy industry by ~10%. Research also indicates that dietary lipid supplements and feeding high amounts of wheat substantially reduce methane emissions. It is estimated that, in 1980, the Australian dairy industry produced ~185 000 t of enteric methane and total enteric methane intensity was ~33.6 g CH4/kg milk. In 2010, the estimated production of enteric methane was 182 000 t, but total enteric methane intensity had declined ~40% to 19.9 g CH4/kg milk. This remarkable decline in methane intensity and the resultant improvement in the carbon footprint of Australian milk production was mainly achieved by increased per-cow milk yield, brought about by the on-farm adoption of research findings related to the feeding and breeding of dairy cows. Options currently available to further reduce the carbon footprint of Australian milk production include the feeding of lipid-rich supplements such as cottonseed, brewers grains, cold-pressed canola, hominy meal and grape marc, as well as feeding of higher rates of wheat. Future technologies for further reducing methane emissions include genetic selection of cows for improved feed conversion to milk or low methane intensity, vaccines to reduce ruminal methanogens and chemical inhibitors of methanogenesis.

scholarly journals Comparison of enteric methane yield and diversity of ruminal methanogens in cattle and buffaloes fed on the same diet

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256048
Author(s):  
P. K. Malik ◽  
S. Trivedi ◽  
A. Mohapatra ◽  
A. P. Kolte ◽  
V. Sejian ◽  
...  
Keyword(s):  
Host Species ◽  
Methane Emissions ◽  
Species Level ◽  
Mitigation Strategies ◽  
Methane Yield ◽  
Pennisetum Purpureum ◽  
Enteric Methane ◽  
Archaea Community ◽  
Enteric Methane Emissions

An in vivo study was conducted to compare the enteric methane emissions and diversity of ruminal methanogens in cattle and buffaloes kept in the same environment and fed on the same diet. Six cattle and six buffaloes were fed on a similar diet comprising Napier (Pennisetum purpureum) green grass and concentrate in 70:30. After 90 days of feeding, the daily enteric methane emissions were quantified by using the SF6 technique and ruminal fluid samples from animals were collected for the diversity analysis. The daily enteric methane emissions were significantly greater in cattle as compared to buffaloes; however, methane yields were not different between the two species. Methanogens were ranked at different taxonomic levels against the Rumen and Intestinal Methanogen-Database. The archaeal communities in both host species were dominated by the phylum Euryarchaeota; however, Crenarchaeota represented <1% of the total archaea. Methanogens affiliated with Methanobacteriales were most prominent and their proportion did not differ between the two hosts. Methanomicrobiales and Methanomassillicoccales constituted the second largest group of methanogens in cattle and buffaloes, respectively. Methanocellales (Methanocella arvoryza) were exclusively detected in the buffaloes. At the species level, Methanobrevibacter gottschalkii had the highest abundance (55–57%) in both the host species. The relative abundance of Methanobrevibacter wolinii between the two hosts differed significantly. Methanosarcinales, the acetoclastic methanogens were significantly greater in cattle than the buffaloes. It is concluded that the ruminal methane yield in cattle and buffaloes fed on the same diet did not differ. With the diet used in this study, there was a limited influence (<3.5%) of the host on the structure of the ruminal archaea community at the species level. Therefore, the methane mitigation strategies developed in either of the hosts should be effective in the other. Further studies are warranted to reveal the conjunctive effect of diet and geographical locations with the host on ruminal archaea community composition.

Effect of pasture management on enteric methane emissions from goats

2021 ◽  
Vol 53 (1) ◽  
Author(s):  
Naomi Cristina Meister ◽  
Abmael da Silva Cardoso ◽  
Fernando Oliveira Alari ◽  
Nailson Lima Santos Lemos ◽  
Rosa Toyoko Shiraishi Frighetto ◽  
...  
Keyword(s):  
Methane Emissions ◽  
Pasture Management ◽  
Enteric Methane ◽  
Enteric Methane Emissions

scholarly journals Revisiting enteric methane emissions from domestic ruminants and their δ13CCH4 source signature

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jinfeng Chang ◽  
Shushi Peng ◽  
Philippe Ciais ◽  
Marielle Saunois ◽  
Shree R. S. Dangal ◽  
...  
Keyword(s):  
Methane Emissions ◽  
Domestic Ruminants ◽  
Enteric Methane ◽  
Enteric Methane Emissions

scholarly journals Can live weight be used as a proxy for enteric methane emissions from pasture-fed sheep?

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
J. M. Moorby ◽  
H. R. Fleming ◽  
V. J. Theobald ◽  
M. D. Fraser
Keyword(s):  
Live Weight ◽  
Methane Emissions ◽  
Enteric Methane ◽  
Enteric Methane Emissions
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