So, after doing a bit of math it seems that each pasture reduces consumtion by 0,5% of the initial amount, i. e. for 2 pastures it's x-0.01x, rather than x-0.005x-0.005(x-0.005x) etc, wich means 200 pastures will reduce catnip cosumption to 0. Though maybe there is a cap later on...
buggy, the so-called "good" ending attainable. Also stupid - after several epic failes (most notably Thalidomide) medicine takes several years of tests - so test subjects had to die just a few days after they cancer. From the very beginning of tests. And, as far as I know, bioingeneers are supporsed to build a self-destruct into their creations. In case.