This is a bad argument on multiple levels.

1) You need to watch some films from slaughterhouses (nice that you use a nice word like "abattoir" instead of slaughterhouse). You'll have a hard time watching one, because conditions there are so horrific that big ag has bought politicians to make filming in slaughterhouses illegal. It is not "quick or instantaneous."

2) The lives of the billions of animals raised for slaughter are short and brutal. It is not like turkeys are frolicking on an midwest meadow one minute and then "quickly and instantly killed" the next.

3) The turkeys, pigs, cows, chickens, ducks, geese, dogs, etc. raised for slaughter have fuck all to do with a turkey in the wild. Your comparison is on the level of 1800 slavers saying, "Better we enslave the Africans here in America than let those savages kill each other in Africa." I mean, who are you trying to convince with that bullshit, your reaader or yourself?

I could spend hours taking apart numerous other facetious arguments you make in this post, but I don't have the time.

Factory farming is NOT sustainable for the planet. Eating meat as we did 200 years ago means that most all humans will eat very little meat.