Top Skip to main content
Skip to Content
LOGO(small) - Queen's University Belfast
  • Our facebook
  • Our x-twitter
  • Our linkedin
  • Our youtube
LOGO(large) - Queen's University Belfast

School of

Biological Sciences

  • Home
  • Study
    • Undergraduate Courses
    • Postgraduate Taught Courses
    • Fieldwork Opportunities
    • Scholarships and Awards
    • Course Accreditations
  • Research
    • Postgraduate Research
    • PhD Opportunities
    • Find a PhD Supervisor
    • Research Impact
    • Research Culture
    • Centre of Excellence for Agri-Food Microbiomes (CEAM)
  • International
    • Partnerships
    • Students
    • Opportunities
  • Employability
    • Business Engagement
    • Employer Testimonials
    • Undergraduate Careers & Placements by Sector
    • Postgraduate Careers & Placements by Sector
    • Student Experiences
    • Alumni Profiles
    • News, Programmes and Events
  • About
    • Facilities
    • Nursing Mothers and Parents’ Room & Quiet Room
    • Athena SWAN
    • Laboratory Efficiency Assessment Framework (LEAF)
    • Applying for Honorary and Visiting Titles
  • People
    • Key Contacts
    • School Management Committee
    • Academic Staff
    • Professional Services Staff
    • Technical Staff
    • Research Staff
    • Honorary Staff
  • Staff Profiles
    • Dr Connor Bamford
    • Prof Lisa Connolly
    • Dr Lucia Lombardi
    • Prof Aaron Maule
    • Dr Linda Oyama
    • Prof Paulo Prodöhl
    • Dr Rachel Wheatley
  • News
  • Graduation
  • Events
  • Home
  • Study
    • Undergraduate Courses
    • Postgraduate Taught Courses
    • Fieldwork Opportunities
    • Scholarships and Awards
    • Course Accreditations
  • Research
    • Postgraduate Research
    • PhD Opportunities
    • Find a PhD Supervisor
    • Research Impact
    • Research Culture
    • Centre of Excellence for Agri-Food Microbiomes (CEAM)
  • International
    • Partnerships
    • Students
    • Opportunities
  • Employability
    • Business Engagement
    • Employer Testimonials
    • Undergraduate Careers & Placements by Sector
    • Postgraduate Careers & Placements by Sector
    • Student Experiences
    • Alumni Profiles
    • News, Programmes and Events
  • About
    • Facilities
    • Nursing Mothers and Parents’ Room & Quiet Room
    • Athena SWAN
    • Laboratory Efficiency Assessment Framework (LEAF)
    • Applying for Honorary and Visiting Titles
  • People
    • Key Contacts
    • School Management Committee
    • Academic Staff
    • Professional Services Staff
    • Technical Staff
    • Research Staff
    • Honorary Staff
  • Staff Profiles
    • Dr Connor Bamford
    • Prof Lisa Connolly
    • Dr Lucia Lombardi
    • Prof Aaron Maule
    • Dr Linda Oyama
    • Prof Paulo Prodöhl
    • Dr Rachel Wheatley
  • News
  • Graduation
  • Events
  • Our facebook
  • Our x-twitter
  • Our linkedin
  • Our youtube
In This Section

  • Home
  • School of Biological Sciences
  • News

News

Seaweed supplements could significantly reduce livestock methane emissions

10 November, 2021

As Cop26 continues to debate the role of methane in climate change, IGFS and School of Biological Sciences researchers are to feed seaweed to farm animals in a bid to slash methane emissions by at least 30%.

Harvesting seaweed samples for research at Queen's Marine Lab, Portaferry, Co Down

Seaweed has long been hailed a ‘superfood’ for humans but adding it to animal feed to reduce methane gas released into the atmosphere by ruminants' burping and flatulence is a relatively new idea. Early laboratory research at IGFS has shown promising results using native Irish and UK seaweeds.

Previous research in Australia and the USA generated headline results – up to 80% reductions in methane emissions from cattle given supplements from a red seaweed variety. These red seaweeds grow abundantly in warmer climates; however, they also contain high levels of bromoform – known to be damaging to the ozone layer. Seaweed indigenous to the UK and Ireland tends to be brown or green and does not contain bromoform.

UK and Irish seaweeds are also rich in active compounds called phlorotannins, found in red wine and berries, which are anti-bacterial and improve immunity so could have additional health benefits for animals.

Now the IGFS/SBS science is moving into the field, with trials on UK farms about to begin, using seaweed sourced from the Irish and North Seas as a feed supplement for cattle.

One 3-year project is in partnership with the UK supermarket Morrisons and its network of British beef farmers who will facilitate farm trials. The project also includes AFBI NI as a partner.

A second project sees IGFS and AFBI join a €2million, international project - led by Irish agency An Teagasc - to monitor the effects of seaweed in the diet of pasture-based livestock. Seaweed will be added to grass-based silage on farm trials involving dairy cows in NI from early 2022.

As well as assessing methane emissions of the beef and dairy cattle, these projects will assess the nutritional value of a variety of homegrown seaweeds, their effects on animal productivity and meat quality.

IGFS lead Sharon Huws, Professor of Animal Science and Microbiology within the School of Biological Sciences, said she expected the combined research to evidence a reduction in GHG emissions of at least 30%.

She said: “The science is there. It’s simply a matter of providing the necessary data and then implementing it. Using seaweed is a natural, sustainable way of reducing emissions and has great potential to be scaled up. There is no reason why we can’t be farming seaweed – this would also protect the biodiversity of our shorelines.

“If UK farmers are to meet a zero-carbon model, we really need to start putting this kind of research into practice. I hope IGFS and AFBI research can soon provide the necessary data and reassurance for governments to take forward.”

Agriculture accounts for around 10% of all UK GHG emissions. Within this, beef farming is the most carbon-intensive, with methane, which cows produce as they digest, a major component. At a NI level, methane accounts for almost a quarter of GHG emissions, with 80% of that from agriculture.

The above projects form part of the Queen's-AFBI Alliance – a strategic partnership between Queen’s University and AFBI to maximise science and innovation capacity in NI to meet global challenges, such as carbon-neutral farming.

Morrisons supermarket plans to be completely supplied by net-zero-carbon British farms by 2030. Sophie Throup, Head of Agriculture at Morrisons said: “As British farming's biggest customer, we’re very mindful of our role in supporting and inspiring the farmers we work with to help them achieve goals in sustainable farming.

“By supporting this research at Queen’s and AFBI, we are trialling this natural approach to reducing environmental emissions and improving the quality of beef products.”

Photo: Professor Sharon Huws
Professor Sharon Huws
Institute for Global Food Security School of Biological Sciences
View Profile
Media

Media enquiries to u.bradley@qub.ac.uk

Share
Latest News
  • PhD Students impress with their presentations in the School’s 3 Minute Thesis Competition
    13 May, 2025
  • PhD Expedition Maps Critical Habitats of Mobula Rays in the Galápagos Islands
    9 May, 2025
  • Black tea and berries could contribute to healthier ageing, research shows
    6 May, 2025
  • Celebrating RSB Accreditation Success and Student Achievement at the House of Commons
    11 April, 2025
  • Mia Constantinescu Wins Big at 2025 National Student Media Awards
    10 April, 2025
QUB Logo
Contact Us

School of Biological Sciences

Queen's University Belfast
School of Biological Sciences
19 Chlorine Gardens
Belfast BT9 5DL
Northern Ireland

GET DIRECTIONS

  • Phone: +44 (0)28 9097 5787
  • Email: sbsigfsoffice@qub.ac.uk 

Quick Links

  • Home
  • Study
  • Research
  • People
© Queen's University Belfast 2025
Privacy and cookies
Website accessibility
Freedom of information
Modern slavery statement
Equality, Diversity and Inclusion
University Policies and Procedures
Manage cookies