Part 1: Bursa of Fabricius is a visual indicator

The bursa of Fabricius is a lymphoid organ which plays an important role in developing immunity against mainly Gumboro in chickens. But does its size say anything? And can we easily correlate its changes to biological conditions? In this first of a series of two articles, the question is answered if differentiation in vaccination can be based on its appearance. By Dr Christophe Cazaban and Dr Yannick Gardin, CEVA Sante Animale, France The cloacal bursa was given its name to pay tribute to D