If your dog was born with worms, there's a good chance all his littermates had worms as well... In this case none if Miami's other ASF's looked sick. Not to mention it was born funny looking. Even dog's that are born with worms or develop them young still apear normal physically. I'm sure he got all the nutrients it needed, he just wasn't meant to grow. Same thing with people who have dwarvism, they can eat all they want but they're not growing.
Unfortunately we do not know why this poor little guy was born like that, all we can say is he was sick and after given a second chance, he still couldn't make it. Just because he stopped growing, we can't automatically assume COD was starvation. So unless someone wants to do a biopsy on him, just give it rest already.