Fish Oil In Cattle Diet Reduces The Amount Of Methane Released By Animals

by Aruna on  March 31, 2009 at 10:58 AM Environmental Health
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 Fish Oil In Cattle Diet Reduces The Amount Of Methane Released By Animals
Researchers at University College Dublin have achieved a reduction in the amount of methane released by cattle, by including 2 percent fish oil in the diet of the animals.

The benefits to animals of omega 3 fatty acids in fish oils have been well documented, helping the heart and circulatory system, improving meat quality and reducing methane emissions.

These last two benefits may only apply to cows but lowering emissions is important for the environment, as methane given off by farm animals is a major contribution to greenhouse gas levels.

Now, a research team from University College Dublin has reported that by including 2 percent fish oil in the diet of cattle, they achieved a reduction in the amount of methane released by the animals.

According to Dr. Lorraine Lillis, one of the researchers, "The fish oil affects the methane-producing bacteria in the rumen part of the cow's gut, leading to reduced emissions."

"Understanding which microbial species are particularly influenced by changes in diet and relating them to methane production could bring about a more targeted approach to reducing methane emissions in animals," she said.

More than a third of all methane emissions, around 900 billion tonnes every year, are produced by methanogen bacteria that live in the digestive systems of ruminants such as cattle, sheep and goats.

By volume, methane is 20 times more powerful at trapping solar energy than carbon dioxide making it a potent greenhouse gas.

There have been suggestions that, to help combat global warming, a cap be placed on the number of animals in animal production due to their methane production, but with a reduction in methane levels through diet this may not be as necessary.

Source: ANI
ARU/L

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