vadaga wrote:the world cannot support 8.5 billion heavily carnivorous humans with the way meat is produced now. better to have a bit of meat, more fish and lots and lots of vegetables-grains-seeds-fruits
Trick wrote:I made up a rule for myself food wise, no Head(brain,facial muscles,tongue,eyes), no Stomach(intestines), no Feet/Cloves/Hoves/claws...My wife(who is Chinese) says I most certainly eat those parts anyway since I like sausages, she's probably right but I keep my rule anyway
the world cannot support 8.5 billion heavily carnivorous humans with the way meat is produced now. better to have a bit of meat, more fish and lots and lots of vegetables-grains-seeds-fruit
the world cannot support 8.5 billion heavily carnivorous humans with the way meat is produced now. better to have a bit of meat, more fish and lots and lots of vegetables-grains-seeds-fruit
Then the future can suck itself.
Patrick wrote:Nope. Not at all. A lot of veggies for sure, but I am not vegetarian or a vegan (which I despise).
I simply do not like artificial meat or any other product for that matter.
grzegorz wrote: For example, I know a vegan who will leave the table if you put creamer in your coffee.
Trick wrote:Read somewhere sometime ago that when the buffalo roamed the American continent methane emissions must have been at least twice as high than of today, could that be true?
Best Answer: Yes. The methane is produced not by the animals but by the bacteria in their gut. Given bacteria can evolve into new species over a few weeks, the geographic separation of american bison and european cattle (domestic cows are descendants of the Auroch) means that these bacterial species have been isolated for countless generations and have adapted to the different feeds the bovine species fed on over the course of their own evolution. The type of feed is also a factor.
Kelliher and Clark, (2010). Methane emissions from bison—An historic herd estimate for the North American Great Plains. Agricultural and Forest Meteorology 150:473-477. http://www.sciencedirect.com/science/art...
EDIT: OK here are two separate papers looking at rates of methane production. In the one involving bison there was a single standardised diet (alfalfa pellets) and the Bison produced 30 L/kg whereas the dairy/beef cattle experiment involves varying quality feed types: mixed hay/legume (high quality), or varied quality grass hay (medium and low). Alfalfa is a legume so let's assume the high quality feed is comparable to the bison alfalfa diet. There were variations between dairy and beef cattle (due to effects of selective breeding) but the average methane production was 29.4 ± 1.83 L/kg. For the lower quality feeds methane production was much higher. So yes they are on pretty much a level playing field but consider that Bison do not graze solely on feed of single quality and have not been selectively bred to do so. Cattle have been selectively bred to maximise productivity from the available feed stocks so it is possible that the diets bison consume in nature may have a different methane production. However I have no evidence to back this up, it is just an assumption. But from this evidence, it appears that Bison would not be an alternative to European cattle.
Interestingly though, all the deer species produced far less methane than bison, even when eating more of the feed. But I don't think you can milk them as easily. have found research previously indicating goats produce vastly less methane than cattle do if you can't face the idea of life without cheese.
S
ource(s):
Galbraith at al., (1998). Intake, digestibility, methane and heat production in bison, wapiti and white-tailed deer. Canadian Journal of Animal Science, 78(4): 681-691. http://pubs.aic.ca/doi/pdf/10.4141/A97-0...
Boadi & Wittenberg, (2002). Methane production from dairy and beef heifers fed forages differing in nutrient density using the sulphur hexafluoride (SF6) tracer gas technique. Canadian Journal of Animal Science 82, 201-206. http://pubs.aic.ca/doi/pdf/10.4141/A01-0...
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