I'm honestly happy with this part: I'm all for reducing livestock use as much as possible, and the fodder restriction is a nice way to push for this by giving a natural constraint: can't have more livestock than you can feed "by yourself".

I guess the idea is to minimize the amount of slurry per square meter.

"Nitrate exceeds the limit value of 25 mg/l in groundwater at almost 15 % of the monitoring sites across Switzerland. In areas where arable farming is predominant, concentrations are above the limit at more than 40% of the monitoring sites."

Farming in Switzerland is a completely different, smaller, culture. Think many small farmers working together instead of one or two big farmers per valley