Addition of Activated Carbon into a Cattle Diet to Mitigate GHG Emissions and Improve Production

Al-Azzawi, Mohammed and Bowtell, Les ORCID: and Hancock, Kerry ORCID: and Preston, Sarah (2021) Addition of Activated Carbon into a Cattle Diet to Mitigate GHG Emissions and Improve Production. Sustainability, 13 (15):8254. pp. 1-17.

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Globally, the most problematic greenhouse gas (GHG) emissions of ruminant livestock is methane (CH4), with a global warming potential 25 times that of carbon dioxide. This work considers the emissions and production effects of powdered activated carbon (PAC) at 0.5% by dry matter (DM) on methanogenic rumen flora as the major source of dairy cattle enteric methane emissions. In total, 180 dairy cattle located in Brymaroo, Queensland (QLD), Australia, were studied in a three-cycle repeated measures ANOVA format with a 4 week primary interval. Emissions eructated during milking and in faecal deposits were measured, and in addition, 16S rRNA gene sequencing was performed to determine the collective populations of prokaryotic bacteria and archaea as well methanogenic communities for each treatment. Moreover, 0.5% PAC addition reduced CH4 emissions by 30–40% and CO2 emissions by 10%, while improving daily milk production by 3.43%, milk protein by 2.63% and milk fat by 6.32%, on average for the herd (p < 0.001 in all cases). rRNA gene sequencing showed populations of methanogenic flora decreased by 30% on average with a corresponding increase in the nonmethanogenic species. We strongly advocate further on-farm trials with the dietary addition of PAC in ruminant diets to mitigate emissions while maintaining or improving productivity.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Current - Research and Innovation Division (12 Jul 2012 -)
Date Deposited: 19 Jan 2022 03:18
Last Modified: 21 Jan 2022 01:43
Uncontrolled Keywords: greenhouse gas (GHG) emissions; methane (CH4); powdered activated carbon (PAC); ruminants
Fields of Research (2008): 07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070204 Animal Nutrition
Fields of Research (2020): 40 ENGINEERING > 4009 Electronics, sensors and digital hardware > 400909 Photonic and electro-optical devices, sensors and systems (excl. communications)
30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3003 Animal production > 300303 Animal nutrition
30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3003 Animal production > 300307 Environmental studies in animal production
41 ENVIRONMENTAL SCIENCES > 4101 Climate change impacts and adaptation > 410101 Carbon sequestration science
Socio-Economic Objectives (2008): D Environment > 96 Environment > 9603 Climate and Climate Change > 960302 Climate Change Mitigation Strategies
Socio-Economic Objectives (2020): 19 ENVIRONMENTAL POLICY, CLIMATE CHANGE AND NATURAL HAZARDS > 1903 Mitigation of climate change > 190302 Management of greenhouse gas emissions from animal production
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