Yes I'm not sure if they've repeated that any time more recently, but since it's still 'in the books' and hasn't been replaced it's still technically law. My COTBOE mentioned this in a talk just a few years ago and was saying how important it was to know the ingredients of dog food, not give your dog a transfusion during an operation, etc.
It's ridiculous because if it's wrong to use blood as fertilizer then why did God say to pour it on the ground? If it's wrong to feed it to animals, then why do carnivores always eat meat with the blood? If animals are under the same laws as JW humans, then why should we let chickens practice polygamy, miss meetings, or masturbate pigs, etc. for animal husbandry