Can enteric methane emissions from ruminants be lowered without lowering their production?

Grainger, C.; Beauchemin, K. A.

doi:10.1016/j.anifeedsci.2011.04.021

Cited by 350 publications

(311 citation statements)

References 61 publications

Supporting

Mentioning

254

Contrasting

Unclassified

Order By: Relevance

“…On the basis of several studies (Eugene et al, 2008;Grainger and Beauchemin 2011;Rabiee et al, 2012), Hristov et al (2013) conclude that lipids are effective in reducing enteric CH 4 emission, but the feasibility of this mitigation practice depends on affordability of oil products and potential negative effects on animal productivity, for example, reduction in fibre digestibility. Although Eugè ne et al (2011) reported that the combination of CH 4 reductions and reduced dry matter intake (DMI) resulted in no difference in CH 4 per unit of DMI, Rabiee et al (2012) reported consistent reductions in CH 4 production per unit of DMI, or Ei for dairy cows.…”

mentioning

confidence: 99%

“…Although Eugè ne et al (2011) reported that the combination of CH 4 reductions and reduced dry matter intake (DMI) resulted in no difference in CH 4 per unit of DMI, Rabiee et al (2012) reported consistent reductions in CH 4 production per unit of DMI, or Ei for dairy cows. Grainger and Beauchemin (2011) concluded that with up to 8% fat in the diet, a 10 g/kg increase in dietary fat would decrease CH 4 yield by 1 g/kg DMI in cattle and 2.6 g/kg in sheep. However, the effect of these treatments on animal production over a longer time period was not reported.…”

mentioning

confidence: 99%

“…The important question of persistence of the effect of lipids on CH 4 production has not been adequately addressed (Woodward et al, 2006). Some studies do report long-term effects of dietary lipids, but data are inconsistent (Holter et al, 1992;Grainger et al, 2008 and2010b;Grainger and Beauchemin, 2011).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Technical options for the mitigation of direct methane and nitrous oxide emissions from livestock: a review

Gerber

Hristov

Henderson

et al. 2013

Animal

311

218

View full text Add to dashboard Cite

Although livestock production accounts for a sizeable share of global greenhouse gas emissions, numerous technical options have been identified to mitigate these emissions. In this review, a subset of these options, which have proven to be effective, are discussed. These include measures to reduce CH 4 emissions from enteric fermentation by ruminants, the largest single emission source from the global livestock sector, and for reducing CH 4 and N 2 O emissions from manure. A unique feature of this review is the high level of attention given to interactions between mitigation options and productivity. Among the feed supplement options for lowering enteric emissions, dietary lipids, nitrates and ionophores are identified as the most effective. Forage quality, feed processing and precision feeding have the best prospects among the various available feed and feed management measures. With regard to manure, dietary measures that reduce the amount of N excreted (e.g. better matching of dietary protein to animal needs), shift N excretion from urine to faeces (e.g. tannin inclusion at low levels) and reduce the amount of fermentable organic matter excreted are recommended. Among the many 'end-of-pipe' measures available for manure management, approaches that capture and/or process CH 4 emissions during storage (e.g. anaerobic digestion, biofiltration, composting), as well as subsurface injection of manure, are among the most encouraging options flagged in this section of the review. The importance of a multiple gas perspective is critical when assessing mitigation potentials, because most of the options reviewed show strong interactions among sources of greenhouse gas (GHG) emissions. The paper reviews current knowledge on potential pollution swapping, whereby the reduction of one GHG or emission source leads to unintended increases in another.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Technical options for the mitigation of direct methane and nitrous oxide emissions from livestock: a review

Gerber

Hristov

Henderson

et al. 2013

Animal

311

218

View full text Add to dashboard Cite

show abstract

“…Increasing the concentration of dietary lipid has been shown to reduce CH 4 emissions from ruminants (Martin et al, 2010;Grainger and Beauchemin, 2011;Patra, 2013). This is achieved through various mechanisms: fatty acids are not fermented in the rumen and therefore increasing dietary lipid concentration reduces the proportion of feed which is fermentable within the rumen; lipids can also reduce CH 4 production by coating fibre particles, reducing their digestibility, and by reducing the numbers and activity of the rumen methanogens and protozoa responsible for methanogenesis (Johnson and Johnson, 1995;Patra, 2013).…”

mentioning

confidence: 99%

“…Although increased concentrations of dietary lipid has been shown to reduce CH 4 from ruminants (Martin et al, 2010;Grainger and Beauchemin, 2011;Patra, 2013), at high concentrations in the diet lipid can negatively affect DMI and productivity (Brask et al, 2013). Based on a meta-analysis, Patra (2013) demonstrated that dietary lipid concentrations in excess of 6% cause problems with productivity.…”

mentioning

confidence: 99%

Impact of adding nitrate or increasing the lipid content of two contrasting diets on blood methaemoglobin and performance of two breeds of finishing beef steers

Duthie

Rooke

Troy

et al. 2016

Animal

View full text Add to dashboard Cite

Adding nitrate to the diet or increasing the concentration of dietary lipid are effective strategies for reducing enteric methane emissions. This study investigated their effect on health and performance of finishing beef cattle. The experiment was a two × two × three factorial design comprising two breeds (CHX, crossbred Charolais; LU, Luing); two basal diets consisting of (g/kg dry matter (DM), forage to concentrate ratios) 520 : 480 (Mixed) or 84 : 916 (Concentrate); and three treatments: (i) control with rapeseed meal as the main protein source replaced with either (ii) calcium nitrate (18 g nitrate/kg diet DM) or (iii) rapeseed cake (RSC, increasing acid hydrolysed ether extract from 25 to 48 g/kg diet DM). Steers (n = 84) were allocated to each of the six basal diet × treatments in equal numbers of each breed with feed offered ad libitum. Blood methaemoglobin (MetHb) concentrations (marker for nitrate poisoning) were monitored throughout the study in steers receiving nitrate. After dietary adaptation over 28 days, individual animal intake, performance and feed efficiency were recorded for a test period of 56 days. Blood MetHb concentrations were low and similar up to 14 g nitrate/kg diet DM but increased when nitrate increased to 18 g nitrate/kg diet DM ( P < 0.001). An interaction between basal diet and day ( P < 0.001) indicated that MetHb% was consistently greater in Concentrate -than Mixed-fed steers at 18 g nitrate/kg diet DM. Maximum individual MetHb% was 15.4% (of total Hb), which is lower than considered clinically significant (30%). MetHb concentrations for individual steers remained consistent across time. Concentrate-fed steers were more efficient (lower residual feed intake (RFI) values) than Mixed-fed steers ( P < 0.01), with lower dry matter intake (DMI) (kg/day) ( P < 0.001) and similar average daily gain (ADG). CHX steers were more efficient (lower RFI; P < 0.01) than LU steers with greater ADG ( P < 0.01), lower DMI (/kg BW; P < 0.01) and lower fat depth ( P < 0.001). ADG, BW or DMI did not differ across dietary treatments ( P > 0.05). Neither basal diet nor treatment affected carcass quality ( P > 0.05), but CHX steers achieved a greater killing out proportion ( P < 0.001) than LU steers. Thus, adding nitrate to the diet or increasing the level of dietary lipid through the use of cold-pressed RSC, did not adversely affect health or performance of finishing beef steers when used within the diets studied.

show abstract

Mitigation of greenhouse gas emissions from animal production

Liu

2018

Greenhouse Gases

View full text Add to dashboard Cite

The accurate quantification of the carbon footprints of animal products and the related development of greenhouse gas (GHG) mitigation strategies are of interest to consumers, the general public, and the academic community. The objective of this review was to summarize recent advances in GHG emission quantification, life‐cycle assessment applications, and mitigation technologies for animal production in the USA, to assist the development of system‐based solutions for mitigation of GHG emissions from animal production. The GHG emissions from animal production mainly come from feed production, enteric fermentation, and manure management. Opportunities to mitigate emissions from feed production largely rely on continuous improvements in animal and feed production efficiency. This is in general agreement with the economic interest of the industry. To mitigate emissions from manure, many technologies can be chosen, depending on the given economic and regulatory environments. It is possible to minimize GHG emissions from manure through manure energy recovery when this is economically feasible. For enteric emissions, there are limited opportunities to reduce GHG emissions through dietary manipulation, feed management, or feed supplementations. Improving environmental stewardship of consumers and reducing food waste will reduce animal protein demand and are important bottom‐line strategies to mitigate GHG from animal production systems. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

Can enteric methane emissions from ruminants be lowered without lowering their production?

Cited by 350 publications

References 61 publications

Technical options for the mitigation of direct methane and nitrous oxide emissions from livestock: a review

Technical options for the mitigation of direct methane and nitrous oxide emissions from livestock: a review

Impact of adding nitrate or increasing the lipid content of two contrasting diets on blood methaemoglobin and performance of two breeds of finishing beef steers

Mitigation of greenhouse gas emissions from animal production

Contact Info

Product

Resources

About