
There actually no point trying to reason with these morons - the stock food in question is Palm Kernel Extract (PKE) which is the residue after Palm Oil is extracted from the fruit of Elaeis guineensis.
Indeed the majority of PKE is burned, in situ as it has little economic worth.
But entrepreneurial types in the third world developed a market for it as stock food, thus providing additional revenue to the under developed (UN speak for poor) regions where Palm Oil is grown.
Make no mistake about it, the reason why these cretins are doing this is not because PKE wrecks the planet. It is rather that these spoiled brats hate free enterprise and entrepreneurship, most especially when it has the potential to raise the poor from a state of poverty.
Its a crying shame that the penalty for piracy on the high seas, which is what this amounts to, is no longer hanging in chains - If we dealt to a few of these greenpeace wackos that way then the world should be able go about international commerce without further interference from these dolts and poverty in the third world might be reduced.