Burping bovine: University of Guelph researchers develop tool to predict how much methane a cow will belch out
University of Guelph (U of G) researchers have been looking at ways to breed dairy cows that burp out less methane, a harmful greenhouse gas emission contributing to climate change.
“Methane has a global warming potential 28 times that of carbon dioxide,” said Christine Baes, chair of the U of G animal bioscience department.
Baes is leading a team from the university and Ontario Dairy Research Centre that has developed a new tool, which estimates how much methane will be produced by each of the roughly 700,000 registered dairy cows on farms across Canada.
Researchers with the University of Guelph are working to breed low-methane producing cows. (Spencer Turcotte/CTV News)
Almost 14 per cent our greenhouse gas emissions around the world come from burping livestock, according to the U of G. The university is hoping to change that.
“Over the past several years, our team has been trying to deliver a genetic evolution for methane emission and feed efficiency in dairy cattle,” Baes said.
It means breeders can now select which cows will produce calves that, when fully grown, will belch out less greenhouse gas.
“We're really proud that this research has resulted in Canada being the first country worldwide to be able to deliver genetic evolutions for methane emissions,” Baes said.
HERE’S HOW IT WORKS
At the research centre, which operates in partnership with the university, cows put their heads into 'green feed machines’ and as they eat their hearty meal, paired with heavy breathing and burping, they produce data.
“So when the animal is breathing, those gases are taken up by the machine and measured,” Baes explained.
With about 500 cows at the research centre, there is no shortage of burps to measure.
In fall 2022, the team published a paper in the Journal of Dairy Science describing how to predict methane emissions in dairy cattle using milk mid-infrared reflectance spectroscopy (MIRS).
The U of G said in a recent study that MIRS data could be used to predict methane emissions. Matching up milk samples with DNA samples from individual cows allows a farmer to pinpoint which animals to breed for lower emissions. Ultimately, the hope is that it will contribute to more sustainable dairy operations.
WHICH END IS WORSE?
When it comes to passing gas from the back passage, Baes said the main concern comes from the mouth.
“Many people do think the problematic gas comes out the back end but that's not the case. About 95 per cent of enteric methane emissions are coming out of the front end of the animal,” she said.
The new methane emissions evaluations will initially be provided to owners of Holstein cattle involved in registration and herd testing. They make up the majority of Canada's dairy herd.
Other breeds will be included as more data is collected.
CTVNews.ca Top Stories
They were from different countries and barely spoke each other's languages. More than 20 years later, they're still happily in love
He decided to spend Christmas somewhere that wouldn't involve snowstorm disasters. She was spending the holidays with family, travelling for the first time outside of her native country of Venezuela. Both weren't expecting to meet someone special the night they crossed paths at a bar in Puerto Plata, Dominican Republic.
Man who set himself on fire outside Trump trial dies of injuries, police say
A man who doused himself in an accelerant and set himself on fire outside the courthouse where former U.S. President Donald Trump is on trial has died, police said.
12 students and teacher killed in Columbine school shooting remembered at 25th anniversary vigil
Thirteen victims of the Columbine High School shooting were remembered during a vigil Friday on the eve of the 25th anniversary of the shooting that was the worst the nation had seen at the time.
Young people 'tortured' if stolen vehicle operations fail, Montreal police tell MPs
One day after a Montreal police officer fired gunshots at a suspect in a stolen vehicle, senior officers were telling parliamentarians that organized crime groups are recruiting people as young as 15 in the city to steal cars so that they can be shipped overseas.
Israeli airstrike in southern Gaza city of Rafah kills at least 9 Palestinians, including 6 children
An Israeli airstrike on a house in Gaza's southernmost city killed at least nine people, six of them children, hospital authorities said Saturday, as Israel pursued its nearly seven-month offensive in the besieged Palestinian territory.
Mandisa, Grammy award-winning 'American Idol' alum, dead at 47
Soulful gospel artist Mandisa, a Grammy-winning singer who got her start as a contestant on 'American Idol' in 2006, has died, according to a statement on her verified social media. She was 47.
Iraq investigates a blast at a base of Iran-allied militias that killed 1. U.S. denies involvement
Iraqi authorities said Saturday that they were investigating an explosion that struck a base belonging to the Popular Mobilization Forces, a coalition of Iran-allied militias, killing one person and injuring eight.
The House is on the brink of approving aid for Ukraine and Israel after months of struggle
The House is preparing in a rare Saturday session to approve US$95 billion in foreign aid for Ukraine, Israel and other U.S. allies.
'It was joy': Trapped B.C. orca calf eats seal meat, putting rescue on hold
A rescue operation for an orca calf trapped in a remote tidal lagoon off Vancouver Island has been put on hold after it started eating seal meat thrown in the water for what is believed to be the first time.