You are correct, the lactose (milk-sugar) is the reason for the gas built-up in beings that lack the enzyme lactase, leaving too much sugar for the gut-bacteria.Kefir is a fermented milk product. The grains are agglomerations of bacteria and yeasts that perform the fermenting. They are very beneficial for human gut flora and as I understand it that should also work for animals.
At the heart of the fermenting process is the fact that the microorganisms eat up the lactose (the milk sugar). Therefore fermented products (and I guess the fermenting little critters themselves) should not cause a lactose-intolerance reaction, or at the very least, are much less likely to cause it than just plain milk.
On a related note I wonder if ducks would eat sauerkraut, or dogs enjoy it (probably because of the stinky, ie. very dog-friendly, aroma).
Farting ducks does sound kind of threatening tbh.
Sauerkraut hmm? You want German quacking Dux!


A couple of years ago i tried to feed them silage and their response was that »wanna poison us?« look. At least my dux all seem to have a sweet
And yes, farting ducklings are dangerous. Its not the loud plopping sound, its not the stink, but the smashing sound when the high-flying projectile hits something and you know you have to clean that up.
