Wat is verskil tussen rioolplaas en voerkraal?

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Dit pla my al lankal geweldig baie, dat daar op Rsg beweer was dat voerkrale tonne metaangas in lug vrystel en dat 'vleisvry Maandag' agv dit ingestel was op Rsg, met vegetariese resep!

Logiese vraag, is beeste dan nie juis Vegans nie?

Hou mense op met skyt, as hul vegetaries eet? Dis onlogiese redenasie deur Rsg, maar dis kenmerkend ook van Rsg!

Hans Richardt

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Kommentaar

  • Hans:

     
    Ek weet ook nie eintlik nie. In voerkrale word beeste met meel gevoer eerder as gras, en dalk gee dit meer gas af, maar ek is maar skepties oor die hele ding met vee se metaanvrystellings. Voor daar miljoene beeste en skape was, was daar miljoene wilde grasvreters, wat tog seker net soveel metaan vrygestel het? Dalk kan iemand hier ons meer inligting daaroor gee. 
  • Hello, 

     
    Hans, wat het jy teen RSG? Dit is 'n goeie stasie en vergelyk goed met BBC se Radio 4 & Radio 3 wat verskeidenheid betref en die manier waarin die programme versprei word. 
     
    Maar die vraag is oor metaanvrystellings. 'n Paar jaar terug het ek hierdie artikel in die New York Times gelees wat deel was van 'n reeks oor 'fabriek plase' en word die belangrikste temas uit die spesifieke artikel geplaas: 
     
    June 5, 2009
    Greening the Herds: A New Diet to Cap Gas
    By LESLIE KAUFMAN
     
    Chewing her cud on a recent sunny morning, Libby, a 1,400-pound Holstein, paused to do her part in the battle against global warming, emitting a fragrant burp.Libby, age 6, and the 74 other dairy cows on Guy Choiniere’s farm here are at the heart of an experiment to determine whether a change in diet will help them belch less methane, a potent heat-trapping gas that has been linked to climate change.Since January, cows at 15 farms across Vermont have had their grain feed adjusted to include more plants like alfalfa and flaxseed — substances that, unlike corn or soy, mimic the spring grasses that the animals evolved long ago to eat.
     
    As of the last reading in mid-May, the methane output of Mr. Choiniere’s herd had dropped 18 percent. 
     
    Cows have digestive bacteria in their stomachs that cause them to belch methane, the second-most-significant heat-trapping emission associated with global warming after carbon dioxide. Although it is far less common in the atmosphere than carbon dioxide, it has 20 times the heat-trapping ability.
     
    Frank Mitloehner, a University of California, Davis, professor who places cows in air-tight tent enclosures and measures what he calls their “eruptions,” says the average cow expels — through burps mostly, but some flatulence — 200 to 400 pounds of methane a year.
     
    More broadly, with worldwide production of milk and beef expected to double in the next 30 years, the United Nations has called livestock one of the most serious near-term threats to the global climate. 
     
    In a 2006 report that looked at the environmental impact of cows worldwide, including forest-clearing activity to create pasture land, it estimated that cows might be more dangerous to Earth’s atmosphere than trucks and cars combined.
     
    Wie het dit geweet en dan lyk hulle so vreedsaam....
     
    William R. Wailes, the head of the department of animal science at Colorado State University who is working on the cow of the future, says scientists are looking at everything from genetics — cows that naturally belch less — to adjusting the bacteria in the cow’s stomach.

    For the short run, Professor Wailes said, changes in feed have been the most promising.

    Nancy Hirshberg, Stonyfield’s vice president for natural resources, commissioned a full assessment of her company’s impact on climate change in 1999 that extended to emissions by some of its suppliers.“I was shocked when I got the report,” Ms. Hirshberg said, “because it said our No. 1 impact is milk production. Not burning fossil fuels for transportation or packaging, but milk production. We were floored.”From that moment on, Ms. Hirshberg began looking for a way to have the cows emit less methane.

    A potential solution was offered by Groupe Danone. 

    Scientists working with Groupe Danone had been studying why their cows were healthier and produced more milk in the spring. The answer, the scientists determined, was that spring grasses are high in Omega-3 fatty acids, which may help the cow’s digestive tract operate smoothly.

    Corn and soy, the feed that, thanks to postwar government aid, became dominant in the dairy industry, has a completely different type of fatty acid structure.When the scientists began putting high concentrations of Omega-3 back into the cows’ food year-round, the animals were more robust, their digestive tract functioned better and they produced less methane.

    A reason farmers like corn and soy is that those crops are a plentiful, cheap source of energy and protein — which may lead some to resist replacing them.....

     
  • Charl le Roux

    Jy opper mos nou `n baie geldige punt hier, Hans.  Ons lees nooit van metaangas in leeupoep nie; dis die koeie wat dit vrystel, en hulle is vegetariërs.  Dis dus duidelik dat vegetariërs nie net meer poep nie, maar dat hulle poep ook meer gekrui is.  Onder die omstandighede behoort die IPCC `n ondersoek te gelas om vas te stel of die aarde se temperatuur op Maandagaande styg as gevolg van Rsg-luisteraars wat vegetariese kosse kook en aan hulle arme gades voorsit.   Dit mag nodig wees om die koolstofbelasting uit te brei na blomkool en kopkool.  Verbruikers wat nie hierdie produkte koop nie, kan beloon word met koolkrediete wat dan verhandel kan word om vleis teen `n afslag te koop.  Ongelukkig is dit onwaarskynlik dat Amerika die kopkoolprotokol sal onderskryf.

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