"Abner Hale" > wrote in message ps.com...
>
> Scented Nectar wrote:
> > > > In answer to trolls questions, I discuss cds. You keep
> > > > bringing it up. I never claimed to be able to eliminate
> > > > all cds, but a reduction is fine by me.
> > > >
> > >
> > > Hang on. How do you know you're "reducing?" By how many deaths have
> > > you reduced in the last ten years, and how did you arrive at that
> > > number?
> >
> >
> > Let's see. A long time ago, I ate meat. For each
> > pound of meat, it took a huge,huge amount of
> > crops just to make one pound of meat.
>
> NOT huge, huge, sorry. Estimates range from 1.5 to 3 pounds, once you

Calculations feed : beef.

Table 5. Corn grain, medium quality hay and corn silage.

Average
Daily Corn Protein Lime-
Weight Gain Intake Grain Hay Silage Supplement stone

800 2.5 30.3 7.5 5.3 14.2 3.1 0.19

1200 2.5 35.5 13.8 1.3 16.7 3.6 0.22

http://www.ext.nodak.edu/extpubs/ans...f/as1163-1.htm

-----------------------------------------------------------------------------
Average daily gain 2.5 pounds (liveweight).
Medium-high concentrate ration grain + corn silage + hay - average 32.5 lbs.
-----------------------------------------------------------------------------

Live-weight 900 1040 1146 1258 1403 lb
'harvest' 1 ..... 2 .... 3 .... 4 ...... 5
Fat % 17.7 ........22.6 ..... 28.1 .......30.3 ..........34.0
Protein % 14.5 ........13.9 .......12.6 ......12.0 ..........11.6
Water % 51.3 ...... 48.0....... 43.9 ...... 42.3.......... 40.1
Bone % 16.4 ....... 15.4 ...... 15.4 ...... 15.3 .........14.3
carcass weight 450 550 650 750 850 lbs.
http://ars.sdstate.edu/BeefExt/BeefR...ht_and_mar.htm

Those ages are near enough to be used to calculate meat gain %.

protein + water = meat
(1) 65.8% of 450lbs carcass, (4) 54.3% of 750lbs carcass.
= 296.1 = 407.25
- a gain of 111.15lbs of meat for + 300lbs of carcass weight-
or 37.0% of feedlot carcass gain.

Total increase; carcass + wastage -- 1258-900 = 358lbs.

Meat gain- % of liveweight gain; 111.15/358 * 100 = 31% .

2.5 lbs liveweight gain x 31% = 0.77 pounds meat.
--------------------------------------------------------------
32.5 pounds intake / 0.77 = 42.2, or 42 :1, feed : meat gain,
on a medium-high grain ration + silage & hay. (not DM)
--------------------------------------------------------------
Here we'll add 10% fat..,
---------------------------------------------------------------
Add 10% to 0.77lbs meat for fat content = 0.85 pounds beef.
32.5 pounds intake / 0.85 = 38.23, or 38 :1, feed : beef gain.
---------------------------------------------------------------

> factor in that most aniaml feeds aren't useful to humans. You can't
> eat grass, for example.

If arable land (~10%* of all land surface), currently used to grow human-edible
food (1/2*) and livestock feed (1/2*), was used only to grow food for humans,
it would meet the human population's requirements +, whilst at the same time
freeing-up for natural habitat the ~50% of all land surface currently grazed.