I find it is good for early fertilizer, or for tree fertilizing, but if you really want to max fertilize a normal farm you need to use a different method of gathering (one of the crafting recipes, remember ic2 fert works too). All those animals just cause so much lag.So I've been playing with the poop system.
I've noted in my test system that cow and sheep poop the same it seems.
But Ive also noted HOLY *#$@ BALLS you need a lot of poop to keep up with just one MFR farm.
Like my test system has 30 sewage collectors 120 sheep/cows and that can barely keep 2 composters running all the time and 4 of them running just slightly under max speed (seems 2maxed vs 4 not maxed the 4 run slightly faster) That drops 4 fertilizer a cycle while the farm uses up 9 a cycle.
So yeah anyone got a little more XP with MFR that could give me a solid Collectors to animals to composter per farm ratio to work with?