madurobob
Philosopher
I actually jumped in with both feet when you appeared to suggest that cattle are not big eaters of grain. I showed that they are.I appologize. Perahps I'm just thick. There is an ongoing discussion regarding direct consumption of grain by humans compared with the use of grain for the raising of animals for consumption.
I don't understand the importance of the discussion.
But, the initial discussion started, I believe, with a claim that meat is more efficient. So, the amount of energy put into feeding our meat-farmed animals became an important bit of data. One piece of that is just how much grain we farm to feed the critters.
Oh, that's easy. The UN has chimed in on this a few times.So what I'm looking for is a bottom line comparison that is a bit more than we would produce more grain and less green house gases. By how much?
Sorry if I was not clear.
When emissions from land use and land use change are included, the livestock sector accounts for 9 per cent of CO2 deriving from human-related activities, but produces a much larger share of even more harmful greenhouse gases. It generates 65 per cent of human-related nitrous oxide, which has 296 times the Global Warming Potential (GWP) of CO2. Most of this comes from manure.
And it accounts for respectively 37 per cent of all human-induced methane (23 times as warming as CO2), which is largely produced by the digestive system of ruminants, and 64 per cent of ammonia, which contributes significantly to acid rain.
With increased prosperity, people are consuming more meat and dairy products every year, the report notes. Global meat production is projected to more than double from 229 million tonnes in 1999/2001 to 465 million tonnes in 2050, while milk output is set to climb from 580 to 1043 million tonnes.
We would produce more grain? I don't think so.. perhaps marginally less. More of it would be destined for direct human consumption, though. We'd generate no incremental greenhouse gasses since we're generating them today farming the land for grain to feed the animals. But, we'd see direct incremental greenhouse gas reduction by reducing meat-farming. The upper limits of that reduction are outlined in the UN quote, above.
ing animals."