Whole cottonseed supplementation improves performance and reduces methane emission intensity of grazing beef steers

Beck, Matthew R; Thompson, Lucy; White, J. E.; Williams, Greg D.; Place, Sara; Moffet, Corey A.; Gunter, S. A.; Reuter, Ryan R

doi:10.15232/pas.2018-01722

Cited by 18 publications

(15 citation statements)

References 2 publications

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“…Past studies have shown that poor forage digestibility (e.g., substantial lignin), results in greater CH 4 emissions through enteric fermentation (Bell et al 2012, Sollenberger et al 2019. Methane mitigation strategies include increasing forage quality and feed efficiency, providing feed supplements (e.g., rumen modifiers), and increasing animal production (decreasing CH 4 per unit of product) (Knapp et al 2014, Beck et al 2018. Fertilizer use in cultivated grasslands can also intensify agroecosystem N 2 O and CH 4 efflux (Mosier et al 2004), through changes in microbial processes, although relative impacts likely vary across climatic regions.…”

Section: Climate Regulationmentioning

confidence: 99%

A framework for sustainable management of ecosystem services and disservices in perennial grassland agroecosystems

et al. 2021

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Increasing demand for agricultural products is driving grassland management intensification with subsequent impacts on ecosystem services and disservices. Key questions related to grassland production as well as environmental and social concerns must be addressed to ensure sustainability. We propose a unified perspective, addressing numerous trade-offs and synergies between grassland ecosystem services and disservices, and considering an array of ecological and human consequences associated with history and ongoing shifts in management strategies. Much of our discussion utilizes evidence from humid grasslands; however, our examples and recommendations have global implications for the future of grassland management. We characterize four categories of ecosystem services and disservices (provisioning, supporting, regulating, and cultural) provided by perennial grasslands that are extensively managed (low or no input, never cultivated) or intensively managed (high-input, cultivated). We explore a range of potential outcomes following transition from extensive to intensive agroecosystems around the globe. Additionally, we suggest specific research priorities to better evaluate ecosystem services and disservices across management intensities. Finally, we highlight potential benefits of landscape mosaics that include grasslands across a continuum of extensive to intensive strategies.

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Section: Climate Regulationmentioning

confidence: 99%

A framework for sustainable management of ecosystem services and disservices in perennial grassland agroecosystems

et al. 2021

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“…A recent in vitro study (Beck et al, 2018) shows that the addition of whole cotton seed to the ration of grazing ruminants is an efficient solution to reduce the intensity of methane emissions from rumen fermentation.…”

Section: Plant Sourcementioning

confidence: 99%

Opportunities to reduce methane emissions (CH4 ) in the digestive processes of ruminant animals. Review

Videv,

Angelova,

Krustanov

2024

BJAH

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The article covers an extremely important problem concerning the pollution of the environment with greenhouse gases, considered one of the causes of global warming of the Earth. The greenhouse gas (GHG) methane is continuously released as a by-product of enteric fermentation, which is largely produced by the digestive system of ruminants. Methane reduction from ruminants is not a new area of research. However, the number of scientific publications in this field has increased rapidly over the past two decades due to the emphasis placed on the effects of greenhouse gas emissions on climate change. The review aims to explore different options and strategies for reducing methane emissions in the digestive process of ruminants. In conclusion, the authors believe that the studies done so far are substantial but insufficient to draw definitive conclusions. Further studies are needed to develop a coherent system and strategy to reduce methane emissions from ruminants.

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“…The remaining calculations are also outlined in the EPA (2022b) annex report, but they consider a CH 4 conversion factor (which is system and manure management dependent) and the maximum CH 4 -producing capacity of the VS (based on temperature). One important limitation of these calculations is that they appear to not account for certain dietary characteristics that could influence both enteric (e.g., ether extract; Beck et al, 2018Beck et al, , 2019 or manure (e.g., by-product inclusion; Schingoethe et al, 2009). Despite this limitation, the dataset obtained from the EPA (2022a) report represents the only dataset of its kind, with emission estimates from 1990 to 2020, and forms the basis of the report that provides the information that U.S. policymakers and society at large use to draw conclusions regarding agriculture's contribution to U.S. GHG emissions.…”

Section: Data Sourcesmentioning

confidence: 99%

U.S. manure methane emissions represent a greater contributor to implied climate warming than enteric methane emissions using the global warming potential* methodology

Beck,

Thompson,

Rowntree

et al. 2023

Front. Sustain. Food Syst.

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IntroductionIt is important to relate different greenhouse gas (GHG) emissions to a carbon dioxide (CO2) equivalence (CO2-e) basis. This is typically done by multiplying the emissions of a GHG by its global warming potential (GWP), usually on a 100-year basis (GWP100). For methane (CH4), the predominant GHG from livestock production, the GWP100 value is 28. The GWP100 method has been shown to not adequately relate CH4 emissions to actual climate warming due to CH4′s short atmospheric lifespan (~12 years). As such, a newer method has been developed, termed GWP*. This method relates current emission rates to previous emission rates, typically on a 20-year time horizon. To date, the implications of using GWP* rather than GWP100 have not been discussed for manure emissions and have not been discussed for enteric and manure emissions relative to different livestock species or geographical regions of the United States.MethodsUsing emission estimate data from the U.S. Environmental Protection Agency (EPA), we assessed how national manure and enteric CH4 emissions changed from 1990 to 2020.ResultsThe average rate of change was analyzed by regression. Enteric CH4 emissions remained relatively constant with a non-significant slope (P = 0.51), whereas manure CH4 emissions have been increasing (P < 0.01; R2 = 0.96) by 0.03-MMT/year. Furthermore, investigation demonstrated that the increase in manure CH4 emissions was largely driven by the dairy (25.9-kt increase in manure CH4 per year; P < 0.01; R2 = 0.98) and swine (5.4-kt increase in manure CH4 per year; P < 0.01; R2 = 0.50) industries. Due to the increasing emission estimates, manure CH4 [90.8-MMT CO2-warming equivalence (CO2-we) on average] was a larger contributor to climate warming than enteric CH4 (89.2-MMT CO2-we on average) from 2010 through 2020, when calculated with the GWP* methodology. This stands in contrast to the GWP100 methodology, which suggests that enteric CH4 emissions (191-MMT CO2-e) from 2010 to 2020 were on average 206% greater contributors to warming than manure CH4 emissions (62.3-MMT CO2-e).DiscussionThese results suggest that manure CH4 emissions may be contributing more to climate warming than enteric CH4, and more effort may be required to mitigate this source of emissions.

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Whole cottonseed supplementation improves performance and reduces methane emission intensity of grazing beef steers

Cited by 18 publications

References 2 publications

A framework for sustainable management of ecosystem services and disservices in perennial grassland agroecosystems

A framework for sustainable management of ecosystem services and disservices in perennial grassland agroecosystems

Opportunities to reduce methane emissions (CH4 ) in the digestive processes of ruminant animals. Review

U.S. manure methane emissions represent a greater contributor to implied climate warming than enteric methane emissions using the global warming potential* methodology

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