Most cattle slaughtered in Australia feed solely on pasture.
This is usually rangelands, which constitute about 70% of the continent.
Grazing occurs on primarily native ecosystems.
These have and maintain far higher levels of native biodiversity than croplands. The rangelands can’t be used to produce crops, so production of meat here doesn’t limit production of plant foods.
Grazing is the only way humans can get substantial nutrients from 70% of the continent.
In Australia we can also meet part of our protein needs using sustainably wild-harvested kangaroo meat. Unlike introduced meat animals, they don’t damage native biodiversity. They are soft-footed, low methane-producing and have relatively low water requirements. They also produce an exceptionally healthy low-fat meat.
So they are low fat low methane protein dense with soft feet (to not destroy the environment)and perfectly adapted to the conditions.
In Australia 70% of the beef produced for human consumption comes from animals raised on grazing lands with very little or no grain supplements.
At any time, only 2% of Australia’s national herd of cattle are eating grains in feed lots; the other 98% are raised on and feeding on grass.
Two-thirds of cattle slaughtered in Australia feed solely on pasture.
To produce protein from grazing beef, cattle are killed.
One death delivers (on average, across Australia’s grazing lands) a carcass of about 288 kilograms.
This is approximately 68% boneless meat which, at 23% protein equals 45kg of protein per animal killed.
This means 2.2 animals killed for each 100kg of useable animal protein produced.
....the area off Bremer Bay in WA's South West is home to a natural phenomenon involving a leak from massive hydrocarbon pocket under the seabed, which fuses with the surrounding water to create an ice-like reef known as methane hydrate.
This in turn sparks a food chain involving crustaceans releasing billions of nutrient-rich eggs into the desolate waters.
And that food source brings with it the ocean's big boys.
"On one particular day, over a four nautical mile period, we saw in excess of 100 killer whales - it was ridiculous," Riggs says.
"That is a lot of mouths to feed, so what the hell are they doing?"
To try to work that out, Riggs reached out to oil and gas company Arcadia Petroleum, which holds tenements that cover nearly 19,000 square kilometres in the area.
And the company was happy to hand over its survey findings.
"They supplied me with all their observations, and the observations correlated exactly with what I had observed over the last eight years. They referred to it as the 'hotspot'," Riggs revealed.
"So it definitely seems there is a link between these pressurised deep sea systems leaking, creating methane hydrate reef systems which creatures life."
Pops wrote:
Obviously production is not the largest part of the problem even taking the entire range of foods into account.
--
VT, even Pimentel found that corn production was about a 1:1 deal, usda thought about 19k btu
http://are.berkeley.edu/~zilber11/Conway.pdf
Do you can any of your veggies? A lot of energy there. My folks used to can on the wood stove. It made the kitchen in August and September hot as Hades and kept a boy busy keeping the wood box filled with fine split wood.Shaved Monkey wrote:I spend about $ 650 a year on electricity,running 4 fridge/freezers (and the tv, computer, lights, fan and water pump)
About $100 on gas to cook
and $300 a year on petrol to shop.
even though I grow most of my veg.
Pops wrote:It is so hard to imagine how things would be different post-peak / or in a low carbon world. Much of the energy in the "food chain" is for convenience: because we can. (no not as in glass jar "can" LOL)
Post-peak, convenience will be a luxury. Incomes will be much lower, so we'll eat much lower on the scale of out of season, precooked, prepackaged, frozen-then-nuked meals. But even if you cook everything from scratch you still have the bill for that which may not be any better - again, there is a huge incentive for industrial food to be efficient, just like there is for ag to be efficient.
We sometimes forget and think they pay no attention to energy, but energy is just another cost to be reduced to increase the bottom line.
Pops wrote:It is so hard to imagine how things would be different post-peak / or in a low carbon world. Much of the energy in the "food chain" is for convenience: because we can. (no not as in glass jar "can" LOL)
Post-peak, convenience will be a luxury. Incomes will be much lower, so we'll eat much lower on the scale of out of season, precooked, prepackaged, frozen-then-nuked meals. But even if you cook everything from scratch you still have the bill for that which may not be any better - again, there is a huge incentive for industrial food to be efficient, just like there is for ag to be efficient.
We sometimes forget and think they pay no attention to energy, but energy is just another cost to be reduced to increase the bottom line.
joyfulbozo wrote:What about the milk and dairy products? I think they use least of fossil fuel energy.
Well, if a cow weighing 450 kg has similar energy requirements per kilogram to a human (whose 65 kg burns 3 kWh per day) then the cow must be using about 21 kWh/d.
Pops wrote:hmm, after looking through the MacKay site, this is the extent of the energy analysis:Well, if a cow weighing 450 kg has similar energy requirements per kilogram to a human (whose 65 kg burns 3 kWh per day) then the cow must be using about 21 kWh/d.
Maybe not quite rigorous. LOL
OTOH, I guess it depends on how old Bessy is kept, in a freestall barn 1,500 miles from the corn field or is she out on grass with a TMR supliment.
Return to Open Topic Discussion
Users browsing this forum: No registered users and 23 guests