Featherless Hens: Supplementing their diet with egg yolks and eggshells
PROBLEM: a featherless hen
I have decided to see whether it is possible to supplement a hen’s diet with egg yolks and eggshells in order to improve the amount of calcium she consumes so that her feathers can grow back.
Although this hen does not have many feathers, she is a good layer and generally lays an egg a day. I thought her feathers would grow back when two of the other hens who had been picking on her and pecking her died but I’m still waiting. Although some feathers did grow back, she is still a long way from full feather form.
I have in the past given her crushed up calcium tablets but that hasn’t seemed to work. So I decided to try an experiment. My theory is that she is using all her calcium resources on egg production and so I would try to replenish them by feeding her egg yolk and eggshell.
POSSIBLE SOLUTION: supplement her diet with egg yolks and eggshells
The experiment started today (29th May 2019). I ground up some eggshells in a spice blender. I then mixed an egg yolk and a teaspoon of eggshell in a jam jar lid and fed it to her.
A hen is at the peak of her laying life when she is 35 weeks old. She will normally consume 4g of calcium a day. She consumes most calcium in the early hours of the day but also a small amount throughout the day.
0.5g of her daily calcium intake is indigestible and is lost through faeces, 0.4g is lost through urine and 0.1g is used for bone regeneration. The remaining 3g is used in the egg process: 2g for the eggshell and 1g for the yolk and albumen.
The photo at the top of the page shows her today. The photo below shows her and some of the other hens finishing up the leftovers.