Post #1863568

Almost all global meat production happens in factory farms. Especially in developed countries with the highest meat consumption. I will look at the US for an example: Currently, ‘grass-finished’ beef accounts for less than 1% of the current US supply iopscience.iop.org/article/10.1088/…/aad401 We estimate that 99% of US farmed animals are living in factory farms at present. By species, we estimate that 70.4% of cows, 98.3% of pigs, 99.8% of turkeys, 98.2% of chickens raised for eggs, and over 99.9% of chickens raised for meat are living in factory farms. Based on the confinement and living conditions of farmed fish, we estimate that virtually all US fish farms are suitably described as factory farms, though there is limited data on fish farm conditions and no standardized definition.[1] Land animal figures use data from the USDA Census of Agriculture[2] and EPA definitions of Concentrated Animal Feeding Operations.[3] sentienceinstitute.org/us-factory-farming-estimat… Even if those other methods could magically do much better, which I significantly doubt given the history of those kinds of methods over promising and under delivering, it does relatively little good to look at any other method because they do not come close to scaling to the level of consumption we’re seeing here. A pasture only system could at most come to a small fraction of production. Using 100% of the land, which would create huge deforestation pressures We model a nationwide transition [in the US] from grain- to grass-finishing systems using demographics of present-day beef cattle. In order to produce the same quantity of beef as the present-day system, we find that a nationwide shift to exclusively grass-fed beef would require increasing the national cattle herd from 77 to 100 million cattle, an increase of 30%. We also find that the current pastureland grass resource can support only 27% of the current beef supply (27 million cattle), an amount 30% smaller than prior estimates […] If beef consumption is not reduced and is instead satisfied by greater imports of grass-fed beef, a switch to purely grass-fed systems would likely result in higher environmental costs, including higher overall methane emissions. Thus, only reductions in beef consumption can guarantee reductions in the environmental impact of US food systems. iopscience.iop.org/article/10.1088/…/aad401