How to feed and keep the animals on the Ark?

Recycled? What, meadow mcmuffins for breakfast?

Anyone who has ever cruised for any period of time knows how hard it is to keep fresh food aboard. The pervasive dampness and lack of refrigeration quickly rots your vittles. One year afloat, without any way to reprovision, would have everyone eating everyone and everything else on board.
Look at the records of seafaring in the last couple of centuries. Stale, weavil infested bread, rotting meat, water casks full of algae and undrinkable. And these guys got to reprovision every once in a while. And let's not even think about the pounding, rolling and hobby-horsing of the vessel that would have destroyed water casks, soaked the fodder with salt water and broken bones.
Oh, and could someone explain to me how carnivores survived for a year, not eating all the succulent herbavores all around them?

Allen. Allen. Allen. Rain does not sit on the surface of the ocean like oil on water. In all of my years on the water, I have never heard that claim and I probably have more time afloat than you have breathing oxygen on this rock. Do you have any sourses to cite supporting that claim?
Woodmorappe shows SOME fish can survive in fresh or salt water, not many. Try this. Put a haddock, cod, halibut, flounder, your choice, in a fresh water tank and see if it lives long enough to reproduce. Conversely, place a rainbow trout in the ocean and record the results.
Using an olive press to pelletize animal food? Good grief!
Do you actually understand any of the claims you keep making? Please do yourself a favor. Get away from the computer and go out and do something, like take some college science classes. Better yet, go sailing for a while and see what the sea is really like.