I'm not even sure how one could, in principle, give all members of the animal kingdom "equal consideration". For example plant agricultural is intimately linked with both the killing and use of insects, we must kill pest insects, we must use insects to pollinate, we use insects as pesticides and so on. And such things are by no means indirect, when you're spraying crops with pesticides, when you're raising bees to pollinate, etc you're not accidentally killing and/or exploiting insects....its an active part of the operation. Its only "indirect" in the sense that when you purchase the items at the grocery store you're not killing something directly, but the same could be said for animal based products.
We have no choice but to decide which animals are worthy of rights and which are not, the only alternative would seem to be starvation.