Rajasthan education minister, an engineering graduate, says cows breathe in and out oxygen

Rajasthan education minister Vasudev Devnani, an engineer no less, has mentioned that cows breathe in and out oxygen. He was speaking about the "scientific importance" of cow dung at the Hingonia Cow Rehabilitation Centre and made these comments.
This is contrary to what science says. A UN Food and Agricultural Organisation study titled Livestock's Long Shadow: Environmental Issues and Options, released in 2006, says that livestock contribute more to the greenhouse gases that cause global warming than cars.
This has been reported in timesofindia.indiatimes.com dated 17 January 2017.

Apart from saying that cows not only inhale oxygen, they also emit it, he went on to mention about the anti-radioactivity properties of cow dung - he did not provide any explanation for what he said.
Incidentally, Sardar Singh, a former head of the physics department at Rajasthan University in Jaipur has said that iron, lead, concrete, etc., is required for absorbing radioactive material, but cow dung contains light elements like carbon, nitrogen and phosphorous.
The minister also indicated that during ploughing, a cow adds urine and dung to the field - these act as fertiliser. And - one cow could produce enough excreta to make seven acres of land fertile, its urine could protect 100 acres of land from insecticides.


Image courtesy wikimediacommons.org

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