If in the process of Shechita there is a violation of tzaar baalei chayim, is it correct that the meat is treif?

Causing animals needless suffering is a serious offence (there is a difference of opinion as to whether it is forbidden by the Torah or by rabbinical edict). An animal that has suffered needlessly is not, however, rendered non-kosher unless one of its organs was damaged in a manner that would make it a treifa. Any suffering that is a necessary part of the shechita is not “needless” and would not be included in the prohibition against tzaar baalei chayim.