Diet Needs for Elderly Chickens

[Hippie Chicks Mom]

I "retire" my layers until their days are done on my homestead. I can not find anything on the nutritional needs of older chickens. Mine are about 5-6 years old and appear to still be healthy. Does anyone have any insight into any additional needs of non layers?

 

[chfite]

I would think that flock raiser would do the trick, with oyster shell on the side.

Chris