Soy is not the sole component of a poultry diet | Letters

Prof Julian Wiseman challenges claims made by another letter writer and says poultry may cope easily with more than one grainRuth Tanner’s comments (Letters, 9 April) cannot be left unchallenged. She says “the fast-growing, low-welfare breeds we use rely solely on the import of soy for feed – the only grain they can be fed”. Initially, this gives the impression that soy is the sole component of a poultry diet, which is untrue. Diets are a combination of several raw materi