See the thing is, you're clearly excited about the 'gruesome content' of 'animal killing'. So, rather than being a potentially interesting cinematic document about the Latin American butchery practices, this is, instead, an insanely violent piece of, regrettably, pointless theatre.
I think your intentions are good and I know that you just filmed this as any interested observer would. But what you should learn about documentary filmmaking is that it's just like narrative filmmaking- tell a story. What you do it you linger on the spectacle of animals being killed and bleeding. That's not interesting except on a human/social/emotional level. But you don't address that level, instead you just photograph the animal dying.
I'm not saying you've done a bad job, I just think you should try and make documentary films more about the response and consequence, rather than the immediate shock impulse.