{"id":8696,"date":"2021-11-18T12:03:24","date_gmt":"2021-11-18T12:03:24","guid":{"rendered":"https:\/\/sites.reading.ac.uk\/connected\/?p=8696"},"modified":"2021-11-18T12:03:35","modified_gmt":"2021-11-18T12:03:35","slug":"reducing-methane-emissions","status":"publish","type":"post","link":"https:\/\/sites.reading.ac.uk\/connected\/2021\/11\/18\/reducing-methane-emissions\/","title":{"rendered":"Reducing Methane Emissions"},"content":{"rendered":"\n

This week CONNECTED brings you the latest news from the University\u2019s Connecting Research<\/em><\/a> blog, where Dr David Humphries and Dr Zoe Barker from the Centre for Dairy Research write about how animal research is helping to accelerate our transition to net zero greenhouse gas emissions.\u00a0<\/span><\/p>\n

The way we produce our food has a big impact on the environment. Farmers globally need our support to do two jobs that are fundamental to the survival of humankind: feed the world and look after our environment.<\/p>\n

The food sector accounts for around a quarter of global emissions \u2013 and by comparison \u2013 aviation contributes two per cent. We can\u2019t ignore agriculture. At COP26, 90 governments pledged to cut methane emissions by 30% before 2030.<\/p>\n

Changing the emissions of cattle<\/strong><\/h4>\n

Some projects have looked at ways to change the diet of cattle to reduce methane emissions, and additives in feed have been shown to reduce these emissions by 30% or more. As a world-leading agricultural research institution, the University of Reading has been involved in some of these international trials. This begs some questions: how do you change the emissions of cattle? And how do you measure a cow burp?<\/p>\n

Most methane is produced by bacteria living in the digestive system of grazing animals, helping them turn grass and other hard-to-digest plants into useful nutrients. Change the bacteria with different feed or additives, and you cut the methane \u2013 while potentially also making the resulting milk or meat healthier for humans.<\/p>\n

The environmental impact of cattle is not just from their own emissions. We must also consider the impact of the system used to grow their food. Many animals are fed on a mixture of imported protein crops such as soybeans, and on locally harvested grass. The environmental impact of this can be forest habitat destruction, ammonia and nitrate pollution, and impacts on the air and water. By working with soil, plant and animal scientists, alongside other experts, we have shown it is possible to feed cattle a good quality, more locally produced diet of legumes and herbs that reduce the use of nitrogen fertilisers, while also cutting methane.<\/p>\n

How can we tell? This is where regular farming becomes Home Office-regulated animal research. Any procedure involving animals is tightly \u2013 and rightly \u2013 regulated by law in the UK to reduce harm. We can measure emissions accurately by temporarily keeping cows in respiration chambers \u2013 similar to their regular cattle stalls but in sealed, air-conditioned glazed units where we can measure all the ingoing and outgoing air, water, food, milk, urine and faeces, to see how much methane is produced and where the carbon ends up.<\/p>\n

The three R\u2019s<\/strong><\/h4>\n

As with all animal research, we apply the \u2018three Rs\u2019 \u2013 replacing<\/em> the use of animals with other methods whenever possible; reducing<\/em> the numbers of animals used in experiments to a minimum, and refining<\/em> techniques to improve animal welfare. That\u2019s why we have helped pioneer non-animal lab-based \u2018gut models\u2019, and use mathematical models based on existing data, replacing the use of animals for some studies.<\/p>\n

Moreover, healthy animals are more productive. This cuts waste which is good for farmers and great for the environment. We have an active programme of animal behaviour science, using high-tech methods such as video tracking and accelerometers to help us design farm environments which improve animal health and welfare, and to monitor herds to show when an individual is unwell.<\/p>\n

We already know that cows like being with others, staying well, having access to good food and shelter, and these are all things our cattle enjoy.<\/p>\n

We applaud the efforts of anyone who \u2013 like us \u2013 is taking action to replace, reduce, or refine the impact that their lifestyle, or their diet, is having on animals. While the vegan and \u2018flexitarian\u2019 movements grow in the UK, so does the demand for milk and meat elsewhere \u2013 and dairy and meat farming will always be part of the mix. Rather than ignore or oppose farmers and their methods, we need to give support of the right kind to the hundreds of millions of farmers around the world.<\/p>\n

Discover more from the University\u2019s Connecting Research<\/em><\/a> blog, or find out more about the Centre for Dairy Research<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

This week CONNECTED brings you the latest news from the University\u2019s Connecting Research blog, where Dr David Humphries and Dr Zoe Barker from the Centre for Dairy Research write about how animal research is helping to accelerate our transition to net zero greenhouse gas emissions.\u00a0 The way we produce our food has a big impact […]<\/p>\n","protected":false},"author":136,"featured_media":8698,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false},"categories":[6],"tags":[12,129,23,26,44],"acf":[],"yoast_head":"\nReducing Methane Emissions - Connected<\/title>\n<meta name=\"description\" content=\"University researchers write about how animal research is helping to accelerate our transition to net zero greenhouse gas emissions.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sites.reading.ac.uk\/connected\/2021\/11\/18\/reducing-methane-emissions\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reducing Methane Emissions - 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