Jump to content

Archive:000/Zero food-feed competition: Difference between revisions

no edit summary
No edit summary
Line 8: Line 8:
The big question is: How much animal protein could be produced if these were the '''only''' sources of animal feed?
The big question is: How much animal protein could be produced if these were the '''only''' sources of animal feed?


Here's a simple estimate assuming only cows:
====A simple estimate:====
 
{{dp
{{dp
|pasture
|pasture
Line 42: Line 43:
<br />The number is mentioned in the Abstract: https://www.tabledebates.org/research-library/livestock-our-plates-or-eating-our-table
<br />The number is mentioned in the Abstract: https://www.tabledebates.org/research-library/livestock-our-plates-or-eating-our-table
}}
}}
{{dp
{{dp
|world.population
|world.population
|7.9 billion
|7.9 billion
}}
}}
{{calc
{{calc
|(pasture + residues) / conversion_ratio
|(pasture + residues) / conversion_ratio
|(grams/day per capita)(world.population)
|(grams/day per capita)(world.population)
}}
}}
^ Total amount of protein from both meat and dairy, combined. {{x|This is probably a slight overestimate, because some sources say that feed efficiency ratios are lower when the cows are fed less human-edible grains.}}
^ Total amount of protein from both meat and dairy, combined. {{x|This is probably a slight overestimate, because some sources say that feed efficiency ratios are lower when the cows are fed less human-edible grains.}} {{x|Research needed on this page: How do the feed-efficiency ratios of cows compare to other ruminants such as goats, sheep, and buffalo?}}


There would be no animal protein from chickens, pigs, or any other non-ruminant animals.
There would be no animal protein from chickens, pigs, or any other non-ruminant animals.
There ''could'' be some animal protein from goats, sheep, buffalo or other ruminants - but it would subtract from the amount of animal protein available from cows {{x|because they both depend on the same feed supply above}}. {{x|Research needed on this page: How do the feed-efficiency ratios of other ruminants compare to cows? If we switched to other ruminants, would there be more animal protein available or less?}}


Also, there would be even less animal protein available if we [[rewilding|rewilded]] some crop land {{x|since we don't have to grow as many crops if we aren't raising chickens, pigs, etc. There would be less crop residue available for ruminants, so we'd have to raise fewer of them.}} or some pasture land {{x|either allowing it to become forest, or allowing it to become wilder grasslands which are less optimized for feeding cows etc. Both types of rewilding are beneficial in that they sequester more carbon than conventional pasture.}}.
Also, there would be even less animal protein available if we [[rewilding|rewilded]] some crop land {{x|since we don't have to grow as many crops if we aren't raising chickens, pigs, etc. There would be less crop residue available for ruminants, so we'd have to raise fewer of them.}} or some pasture land {{x|either allowing it to become forest, or allowing it to become wilder grasslands which are less optimized for feeding cows etc. Both types of rewilding are beneficial in that they sequester more carbon than conventional pasture.}}.
Line 66: Line 67:
|Global production of milk
|Global production of milk
|Using data from 2019. Other years are almost the same.
|Using data from 2019. Other years are almost the same.
<br /><br />Source: <cite>Crop and livestock products - FAOSTAT</cite>Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
<br />Source: <cite>Crop and livestock products - FAOSTAT</cite><br />Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
}}
}}
{{dp
{{dp
Line 73: Line 74:
|Global production of beef (edible parts)
|Global production of beef (edible parts)
|Using data from 2019. Other years are almost the same.
|Using data from 2019. Other years are almost the same.
<br /><br />Source: <cite>Crop and livestock products - FAOSTAT</cite>Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
<br />Source: <cite>Crop and livestock products - FAOSTAT</cite><br />Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
}}
}}
{{dp
{{dp
Line 100: Line 101:
|Global production of chicken meat (edible parts)
|Global production of chicken meat (edible parts)
|Using data from 2019. Other years are almost the same.
|Using data from 2019. Other years are almost the same.
<br /><br />Source: <cite>Crop and livestock products - FAOSTAT</cite>Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
<br />Source: <cite>Crop and livestock products - FAOSTAT</cite><br />Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
}}
}}
{{dp
{{dp
Line 107: Line 108:
|Global production of eggs (from hens) (edible parts)
|Global production of eggs (from hens) (edible parts)
|Using data from 2019. Other years are almost the same.
|Using data from 2019. Other years are almost the same.
<br /><br />Source: <cite>Crop and livestock products - FAOSTAT</cite>Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
<br />Source: <cite>Crop and livestock products - FAOSTAT</cite><br />Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
}}
}}
{{dp
{{dp
Line 134: Line 135:
|Global production of pig meat (edible parts)
|Global production of pig meat (edible parts)
|Using data from 2019. Other years are almost the same.
|Using data from 2019. Other years are almost the same.
<br /><br />Source: <cite>Crop and livestock products - FAOSTAT</cite>Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
<br />Source: <cite>Crop and livestock products - FAOSTAT</cite><br />Food and Agriculture Organization of the United Nations [https://www.fao.org/faostat]
}}
}}
{{dp
{{dp