$this->bbcode_second_pass_quote('wisconsin_cur', '[')url=http://www.peakoil.com/fortopic38714-0.html]Previous Thread Found Here[/url]
Part One:
World Protein Consumption and the use of grain feeds Ok, that was not the original name of the FAO report but I like my title better.
Why the increased prices of grains over the last few years when, as has been demonstrated on earlier pages, the actual calorie per capita has gone up? We are using that increase to make meat, eggs and milk.
Pork has around a 6:1 conversion ratio (I will assume that the developing nations producing most of this meat are getting the same results as their American counterparts):

Chicken, when producing broilers, has ~2:1 ration

Eggs and milk are a little harder to figure. In 2003 the USDA reported (on average) that 51 pounds of grain were used to produce every 100 eggs and 69 pounds were required to produce 100 pounds (~11.5 gallons) of milk.


So what does all of this mean for grain usage for animal feed?

So while grain production has gone up 1,500 tonnes over the last few decades,
only about 1/2 of this increase is available for human consumption (~600 million tonnes) all of this during a time when population has doubled.

So doing the math quickly and in my head this translates into treading water since the 1960's, no improvement, no loss in respect to grain available per person.
If we are to in anyway "blame" corn based ethanol it really seems to be a secondary problem since so little is used compared to how much the world puts into the production of meat as to make it a small portion of overall usage.

Part Two:
So the question remains, while there were famines in the past, is there anything different about today, in respect to that ability of people to purchase from the pie of food that is available?

The purchasing power of the top 2 Billion has gone up compared to the middle and lower 2 Billion. That increased purchasing power has a number of effects. Among them,
Obesity rate in China growingConclusion:
I have already been too brief and cursury. I expect and hope for some useful additions and corrections in response, but let me add just a few more thoughts.
1. Most of the concepts that we use for Oil production and consumption apply to food and grain production and consumption. Jeavon's Paradox, for example, goes a long way to explain why the excess grain production has been eaten up by increased meat production and human population expansion. Export Land Model is helpful in thinking about how things will unfold as time goes on.

Field Depletion rates even find a rough correlary in the way that the green revolution has resulted in increased but unsustainable yields as
the impacts of the Green Revolution undermine the soil and water upon which it depends..

How long will the plateau last?
So I'm sure I have over simplified or forgotten something. Have at it!
Oh, thats right... when there is a substantive debate to be had you disappear. How is the weather Down Under tonight?
I'm going to go set out some steaks (beef) to grill Monday and get a good night sleep. Yep, I'm part of the problem... at least I confess that their is a problem.