I'm vegetarian, not because of anything to do with animal rights, but because vegetarianism (and veganism) is the only responsible dietary choice in terms of sustainability. The animal rights argument is totally subjective and doomed to fail - even if we can all agree that we don't want intelligent animals to suffer (we can't) where do we draw the line? I personally don't care one jot about whether an animal seems to be suffering in the process of food production, we have absolutely no method of determining whether anything other than ourselves truly experiences suffering, and we don't even understand exactly how we experience it.
The reason for my vegetarianism is a simple choice about resource use. As a general rule, by eating an organism which is itself a trophic consumer you are using approximately ten times the resources (land, water, emissions) that someone who eats only primary producers uses. In other words, it takes ten time the amount of land, water and emissions to produce a kilogram of meat than a kilogram of vegetables.
Of course this is a generalisation - different animals have different trophic efficiency. Cattle are one of the worst offenders, as are pigs. Chickens are relatively efficient. And some plants (tomatoes, pineapples) require more resources than others (wheat, rice, maize) for the same biomass. But there is an order of magnitude difference between the resource inputs for meat and plant foods.
If the world is to sustain our current population for much longer, and certainly if we are to support a larger population as we approach mid-century, our use of resources, particularly land and water, has to change. One way in which this change will be made is for people either to eat less meat, or for new methods of higher efficiency meat production to be developed.
A responsible choice is to make some easy decisions about your own resource use and cut down on meat consumption.
vileru Wrote:The problem with this objection is that it assumes that we need to grow extra crops solely for feeding livestock. This issue is complex, so I'll just outline a few key things:
1. Livestock feed isn't solely crop based. Livestock are often fed meat as well (usually parts not used by humans from slaughtered livestock).
2. Livestock frequently eat crops not fit for human consumption (e.g. grass, hay, etc. and crops humans typically eat but that don't meet inspection standards for human consumption).
3. Pasture-fed livestock directly eat crops without killing as many animals as would most likely be killed by machine harvesting.
These three points don't give the whole picture, but they're enough to show that it's possible for an entirely crop-based agriculture to kill more animals (mammals) than a crop and meat-based food industry. If the ideal is to kill the fewest number of animals, then we should only grow crops enough crops to reach a certain percent of our own consumption needs and then cover the remaining percentage with livestock that are fed with three things:
1. Crops that we grow for our own consumption but that don't pass inspection standards (but are still safe for livestock to eat).
2. Unused parts of slaughtered livestock.
3. Crops eaten directly from pastures.
There is no question about this - we use over 1/3 of arable land globally for fodder production for livestock. Even pastured animals outside the tropics must be housed and fed on fodder during the winter months. And most farmers' outputs would be limited by the arable land available locally if they didn't import feed.
The FAO produced a report on this in 2006 called
Livestock's Long Shadow.
You are correct that there are other sources of livestock feed, including some by-products of human food, but those by-products would not otherwise simply be wasted. Inedible parts of crop plants and offal cuts of meat are used as silage in anaerobic digesters which produce high quality fertiliser, and the emissions from digesters are easily captured and turned into a fuel source.
vileru Wrote:Anyway, I think the philosophical issue I raised strikes the very foundation of the vegetarian debate. While the debate over the lifestyle that kills the fewest animals is interesting, it already assumes that the lives of animals are valuable to the extent that humans should not kill them for food.
Your argument is valid against the (in my view, pointless) animal rights debate. But it is irrelevant against the much stronger argument for vegetarianism which is sustainability.
Edited: 2011-03-20, 4:14 am