Reference for Temurah 27:16

והרי תמורה עצמה דקרבן יחיד היא ואין תמורה עושה תמורה

But is there not the case of the offspring of a dedicated animal which is a sacrifice of an individual and yet does not effect exchange? - This view represents the opinion of R'Judah who says: The offspring of a dedicated animal effects exchange.

Jastrow